… Command (henderkes)

This PR was squashed before being merged into the 7.4 branch.

Discussion
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[Console] don't discard existing aliases when constructing Command

| Q             | A
| ------------- | ---
| Branch?       | 7.4
| Bug fix?      | yes
| New feature?  no
| Deprecations? | no
| Issues        | Fix #62557
| License       | MIT

<!--
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The code in #62557 was broken by 5e7cd96. Here I combine the new aliases found by pipes in the string with existing ones that may have previously been set.
-->

Contributor guidelines:
- [x] Add tests and ensure they pass
- [x] Bug fixes must target the **lowest maintained** branch where they apply
  https://symfony.com/releases#maintained-symfony-branches
- [x] New features and deprecations must target the **feature** branch
  and must add an entry to the changelog file of the patched component:
  https://symfony.com/doc/current/contributing/code/conventions.html#writing-a-changelog-entry
- [x] Do not break backward compatibility:
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Commits
-------

917d8d0c129 [Console] don't discard existing aliases when constructing Command

* 6.4:
  Handle signals on text input
  [TwigBridge] Fix form constraint
  [Runtime] Reuse the already created Request object when the app needs it as argument returns a kernel
  Update validators.el.xlf
  Fix MoneyType: add missing step attribute when html5=true
  [Console] Preserve `--help` option when a command is not found
  [Messenger] Fix PHP 8.5 deprecation for pgsqlGetNotify() in PostgreSQL transport
  chore: PHP CS Fixer - do not use deprecated sets in config
  verify spanish translations with state needs-review-translation

* 7.3:
  [TypeInfo] Simple array should be array type
  Handle signals on text input
  [TwigBridge] Fix form constraint
  [Runtime] Reuse the already created Request object when the app needs it as argument returns a kernel
  Update validators.el.xlf
  Fix MoneyType: add missing step attribute when html5=true
  [Console] Preserve `--help` option when a command is not found
  [Messenger] Fix PHP 8.5 deprecation for pgsqlGetNotify() in PostgreSQL transport
  chore: PHP CS Fixer - do not use deprecated sets in config
  verify spanish translations with state needs-review-translation