Getting `environments not found` error when running a partial set of factors

## Issue

Since `4.9.0` having `env_list=a-b` in `tox.ini` and running `top -e a` raises a error:
```
HandledError| provided environments not found in configuration file: ['a']
```

This error was caught today on on pip-tools' CI (https://github.com/jazzband/pip-tools/pull/1963), see the [log](https://github.com/jazzband/pip-tools/actions/runs/5895206825/job/15990457732?pr=1963#step:9:23). It's likely a regression introduced in https://github.com/tox-dev/tox/pull/3089.

## Environment

Provide at least:

- OS: Ubuntu

<details open>
<summary>Output of <code>pip list</code> of the host Python, where <code>tox</code> is installed</summary>

```console
Package       Version
------------- -------
cachetools    5.3.1
chardet       5.2.0
colorama      0.4.6
distlib       0.3.7
filelock      3.12.2
packaging     23.1
pip           22.3.1
platformdirs  3.10.0
pluggy        1.2.0
pyproject-api 1.5.4
setuptools    65.5.1
tox           4.9.0
virtualenv    20.24.3
wheel         0.40.0
```

</details>

## Output of running tox

<details open>
<summary>Output of <code>tox -rvv</code></summary>

```console
a-b: 266 W remove tox env folder /.tox/a-b [tox/tox_env/api.py:322]
a-b: 307 I find interpreter for spec PythonSpec(path=/usr/local/bin/python) [virtualenv/discovery/builtin.py:58]
a-b: 307 I proposed PythonInfo(spec=CPython3.11.3.final.0-64, exe=/usr/local/bin/python, platform=linux, version='3.11.3 (main, May  3 2023, 08:13:29) [GCC 10.2.1 20210110]', encoding_fs_io=utf-8-utf-8) [virtualenv/discovery/builtin.py:65]
a-b: 308 D accepted PythonInfo(spec=CPython3.11.3.final.0-64, exe=/usr/local/bin/python, platform=linux, version='3.11.3 (main, May  3 2023, 08:13:29) [GCC 10.2.1 20210110]', encoding_fs_io=utf-8-utf-8) [virtualenv/discovery/builtin.py:67]
a-b: 310 D filesystem is case-sensitive [virtualenv/info.py:26]
a-b: 349 I create virtual environment via CPython3Posix(dest=/.tox/a-b, clear=False, no_vcs_ignore=False, global=False) [virtualenv/run/session.py:50]
a-b: 350 D create folder /.tox/a-b/bin [virtualenv/util/path/_sync.py:12]
a-b: 350 D create folder /.tox/a-b/lib/python3.11/site-packages [virtualenv/util/path/_sync.py:12]
a-b: 351 D write /.tox/a-b/pyvenv.cfg [virtualenv/create/pyenv_cfg.py:32]
a-b: 351 D 	home = /usr/local/bin [virtualenv/create/pyenv_cfg.py:36]
a-b: 351 D 	implementation = CPython [virtualenv/create/pyenv_cfg.py:36]
a-b: 352 D 	version_info = 3.11.3.final.0 [virtualenv/create/pyenv_cfg.py:36]
a-b: 352 D 	virtualenv = 20.24.3 [virtualenv/create/pyenv_cfg.py:36]
a-b: 352 D 	include-system-site-packages = false [virtualenv/create/pyenv_cfg.py:36]
a-b: 353 D 	base-prefix = /usr/local [virtualenv/create/pyenv_cfg.py:36]
a-b: 353 D 	base-exec-prefix = /usr/local [virtualenv/create/pyenv_cfg.py:36]
a-b: 353 D 	base-executable = /usr/local/bin/python [virtualenv/create/pyenv_cfg.py:36]
a-b: 354 D symlink /usr/local/bin/python to /.tox/a-b/bin/python [virtualenv/util/path/_sync.py:32]
a-b: 355 D create virtualenv import hook file /.tox/a-b/lib/python3.11/site-packages/_virtualenv.pth [virtualenv/create/via_global_ref/api.py:91]
a-b: 355 D create /.tox/a-b/lib/python3.11/site-packages/_virtualenv.py [virtualenv/create/via_global_ref/api.py:94]
a-b: 356 D ============================== target debug ============================== [virtualenv/run/session.py:52]
a-b: 356 D debug via /.tox/a-b/bin/python /usr/local/lib/python3.11/site-packages/virtualenv/create/debug.py [virtualenv/create/creator.py:200]
a-b: 356 D {
  "sys": {
    "executable": "/.tox/a-b/bin/python",
    "_base_executable": "/usr/local/bin/python3.11",
    "prefix": "/.tox/a-b",
    "base_prefix": "/usr/local",
    "real_prefix": null,
    "exec_prefix": "/.tox/a-b",
    "base_exec_prefix": "/usr/local",
    "path": [
      "/usr/local/lib/python311.zip",
      "/usr/local/lib/python3.11",
      "/usr/local/lib/python3.11/lib-dynload",
      "/.tox/a-b/lib/python3.11/site-packages"
    ],
    "meta_path": [
      "<class '_virtualenv._Finder'>",
      "<class '_frozen_importlib.BuiltinImporter'>",
      "<class '_frozen_importlib.FrozenImporter'>",
      "<class '_frozen_importlib_external.PathFinder'>"
    ],
    "fs_encoding": "utf-8",
    "io_encoding": "utf-8"
  },
  "version": "3.11.3 (main, May  3 2023, 08:13:29) [GCC 10.2.1 20210110]",
  "makefile_filename": "/usr/local/lib/python3.11/config-3.11-x86_64-linux-gnu/Makefile",
  "os": "<module 'os' (frozen)>",
  "site": "<module 'site' (frozen)>",
  "datetime": "<module 'datetime' from '/usr/local/lib/python3.11/datetime.py'>",
  "math": "<module 'math' from '/usr/local/lib/python3.11/lib-dynload/math.cpython-311-x86_64-linux-gnu.so'>",
  "json": "<module 'json' from '/usr/local/lib/python3.11/json/__init__.py'>"
} [virtualenv/run/session.py:53]
a-b: 400 I add seed packages via FromAppData(download=False, pip=bundle, setuptools=bundle, wheel=bundle, via=copy, app_data_dir=/root/.local/share/virtualenv) [virtualenv/run/session.py:57]
a-b: 406 D install pip from wheel /usr/local/lib/python3.11/site-packages/virtualenv/seed/wheels/embed/pip-23.2.1-py3-none-any.whl via CopyPipInstall [virtualenv/seed/embed/via_app_data/via_app_data.py:49]
a-b: 406 D install wheel from wheel /usr/local/lib/python3.11/site-packages/virtualenv/seed/wheels/embed/wheel-0.41.1-py3-none-any.whl via CopyPipInstall [virtualenv/seed/embed/via_app_data/via_app_data.py:49]
a-b: 408 D install setuptools from wheel /usr/local/lib/python3.11/site-packages/virtualenv/seed/wheels/embed/setuptools-68.0.0-py3-none-any.whl via CopyPipInstall [virtualenv/seed/embed/via_app_data/via_app_data.py:49]
a-b: 414 D copy directory /root/.local/share/virtualenv/wheel/3.11/image/1/CopyPipInstall/pip-23.2.1-py3-none-any/pip to /.tox/a-b/lib/python3.11/site-packages/pip [virtualenv/util/path/_sync.py:40]
a-b: 416 D copy /root/.local/share/virtualenv/wheel/3.11/image/1/CopyPipInstall/setuptools-68.0.0-py3-none-any/setuptools-68.0.0.virtualenv to /.tox/a-b/lib/python3.11/site-packages/setuptools-68.0.0.virtualenv [virtualenv/util/path/_sync.py:40]
a-b: 417 D copy directory /root/.local/share/virtualenv/wheel/3.11/image/1/CopyPipInstall/wheel-0.41.1-py3-none-any/wheel-0.41.1.dist-info to /.tox/a-b/lib/python3.11/site-packages/wheel-0.41.1.dist-info [virtualenv/util/path/_sync.py:40]
a-b: 420 D copy directory /root/.local/share/virtualenv/wheel/3.11/image/1/CopyPipInstall/setuptools-68.0.0-py3-none-any/pkg_resources to /.tox/a-b/lib/python3.11/site-packages/pkg_resources [virtualenv/util/path/_sync.py:40]
a-b: 441 D copy /root/.local/share/virtualenv/wheel/3.11/image/1/CopyPipInstall/wheel-0.41.1-py3-none-any/wheel-0.41.1.virtualenv to /.tox/a-b/lib/python3.11/site-packages/wheel-0.41.1.virtualenv [virtualenv/util/path/_sync.py:40]
a-b: 443 D copy directory /root/.local/share/virtualenv/wheel/3.11/image/1/CopyPipInstall/wheel-0.41.1-py3-none-any/wheel to /.tox/a-b/lib/python3.11/site-packages/wheel [virtualenv/util/path/_sync.py:40]
a-b: 549 D generated console scripts wheel3 wheel3.11 wheel-3.11 wheel [virtualenv/seed/embed/via_app_data/pip_install/base.py:43]
a-b: 559 D copy directory /root/.local/share/virtualenv/wheel/3.11/image/1/CopyPipInstall/setuptools-68.0.0-py3-none-any/setuptools-68.0.0.dist-info to /.tox/a-b/lib/python3.11/site-packages/setuptools-68.0.0.dist-info [virtualenv/util/path/_sync.py:40]
a-b: 567 D copy directory /root/.local/share/virtualenv/wheel/3.11/image/1/CopyPipInstall/setuptools-68.0.0-py3-none-any/setuptools to /.tox/a-b/lib/python3.11/site-packages/setuptools [virtualenv/util/path/_sync.py:40]
a-b: 789 D copy /root/.local/share/virtualenv/wheel/3.11/image/1/CopyPipInstall/setuptools-68.0.0-py3-none-any/distutils-precedence.pth to /.tox/a-b/lib/python3.11/site-packages/distutils-precedence.pth [virtualenv/util/path/_sync.py:40]
a-b: 791 D copy directory /root/.local/share/virtualenv/wheel/3.11/image/1/CopyPipInstall/setuptools-68.0.0-py3-none-any/_distutils_hack to /.tox/a-b/lib/python3.11/site-packages/_distutils_hack [virtualenv/util/path/_sync.py:40]
a-b: 796 D generated console scripts  [virtualenv/seed/embed/via_app_data/pip_install/base.py:43]
a-b: 868 D copy directory /root/.local/share/virtualenv/wheel/3.11/image/1/CopyPipInstall/pip-23.2.1-py3-none-any/pip-23.2.1.dist-info to /.tox/a-b/lib/python3.11/site-packages/pip-23.2.1.dist-info [virtualenv/util/path/_sync.py:40]
a-b: 871 D copy /root/.local/share/virtualenv/wheel/3.11/image/1/CopyPipInstall/pip-23.2.1-py3-none-any/pip-23.2.1.virtualenv to /.tox/a-b/lib/python3.11/site-packages/pip-23.2.1.virtualenv [virtualenv/util/path/_sync.py:40]
a-b: 873 D generated console scripts pip-3.11 pip3 pip pip3.11 [virtualenv/seed/embed/via_app_data/pip_install/base.py:43]
a-b: 873 I add activators for Bash, CShell, Fish, Nushell, PowerShell, Python [virtualenv/run/session.py:63]
a-b: 878 D write /.tox/a-b/pyvenv.cfg [virtualenv/create/pyenv_cfg.py:32]
a-b: 878 D 	home = /usr/local/bin [virtualenv/create/pyenv_cfg.py:36]
a-b: 878 D 	implementation = CPython [virtualenv/create/pyenv_cfg.py:36]
a-b: 878 D 	version_info = 3.11.3.final.0 [virtualenv/create/pyenv_cfg.py:36]
a-b: 879 D 	virtualenv = 20.24.3 [virtualenv/create/pyenv_cfg.py:36]
a-b: 879 D 	include-system-site-packages = false [virtualenv/create/pyenv_cfg.py:36]
a-b: 879 D 	base-prefix = /usr/local [virtualenv/create/pyenv_cfg.py:36]
a-b: 879 D 	base-exec-prefix = /usr/local [virtualenv/create/pyenv_cfg.py:36]
a-b: 880 D 	base-executable = /usr/local/bin/python [virtualenv/create/pyenv_cfg.py:36]
a-b: 882 W commands_pre[0]> python -c 'print("a")' [tox/tox_env/api.py:427]
a
a-b: 916 I exit 0 (0.03 seconds) /> python -c 'print("a")' pid=556 [tox/execute/api.py:279]
a-b: 917 W commands_pre[1]> python -c 'print("b")' [tox/tox_env/api.py:427]
b
a-b: 946 I exit 0 (0.03 seconds) /> python -c 'print("b")' pid=562 [tox/execute/api.py:279]
a-b: 947 W commands[0]> python -c 'print("ok")' [tox/tox_env/api.py:427]
ok
a-b: 976 I exit 0 (0.03 seconds) /> python -c 'print("ok")' pid=568 [tox/execute/api.py:279]
  a-b: OK (0.71=setup[0.62]+cmd[0.03,0.03,0.03] seconds)
  congratulations :) (0.80 seconds)
```

</details>

## Minimal example

1. `tox.ini`:
```ini
# tox.ini
[tox]
env_list=a-b

[testenv]
package=skip
commands_pre =
  a: python -c 'print("a")'
  b: python -c 'print("b")'
commands=python -c 'print("ok")'
```

2. run `tox`:
```console
$ tox -e a
ROOT: HandledError| provided environments not found in configuration file: ['a']
```


## Expected result

```console
$ pip install tox==4.8.0
Successfully installed tox-4.8.0

$ tox -e a
a: commands_pre[0]> python -c 'print("a")'
a
a: commands[0]> python -c 'print("ok")'
ok
  a: OK (0.11=setup[0.05]+cmd[0.03,0.03] seconds)
  congratulations :) (0.19 seconds)
```

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Uh oh!

Getting `environments not found` error when running a partial set of factors #3096

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Uh oh!

Getting environments not found error when running a partial set of factors #3096

Description

Issue

Environment

Output of running tox

Minimal example

Expected result

Metadata

Metadata

Assignees

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Type

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Development

Issue actions

Getting `environments not found` error when running a partial set of factors #3096