`nosuchcommand || echo hello` does not execute "echo hello"

Expected:

```shell
$ nosuchcommand; or echo hello
fish: Unknown command: nosuchcommand
hello
```

Unexpected:

```shell
$ nosuchcommand || echo hello
fish: Unknown command: nosuchcommand
```

### Discussed in https://github.com/fish-shell/fish-shell/discussions/12646