minor symfony#58153 [Filesystem] Add a warning about chown() and chgrp() on Windows (alexandre-daubois)

This PR was submitted for the 7.2 branch but it was merged into the 5.4 branch instead.

Discussion
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[Filesystem] Add a warning about `chown()` and `chgrp()` on Windows

| Q             | A
| ------------- | ---
| Branch?       | 5.4
| Bug fix?      | no
| New feature?  | no
| Deprecations? | no
| Issues        | -
| License       | MIT

`chmod()` and `chgrp()` are not supported on Windows (see [this](https://github.com/php/php-src/blob/0d616d1b82ca7609a7ece762cb8688d9bed74370/ext/standard/tests/file/chgrp.phpt#L6) and [this](https://github.com/php/php-src/blob/0d616d1b82ca7609a7ece762cb8688d9bed74370/ext/standard/tests/file/chown.phpt#L6)). I propose to skip the logic of these methods when running on Windows.

Commits
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fa3fd9d [Filesystem] Add a warning about `chown()` and `chgrp()` on Windows

Author: nicolas-grekas

src/Symfony/Component/Filesystem/Filesystem.php

@@ -233,6 +233,9 @@ public function chmod($files, int $mode, int $umask = 0000, bool $recursive = fa
     /**
      * Change the owner of an array of files or directories.
      *
+     * This method always throws on Windows, as the underlying PHP function is not supported.
+     * @see https://www.php.net/chown
+     *
      * @param string|iterable $files     A filename, an array of files, or a \Traversable instance to change owner
      * @param string|int      $user      A user name or number
      * @param bool            $recursive Whether change the owner recursively or not
@@ -260,6 +263,9 @@ public function chown($files, $user, bool $recursive = false)
     /**
      * Change the group of an array of files or directories.
      *
+     * This method always throws on Windows, as the underlying PHP function is not supported.
+     * @see https://www.php.net/chgrp
+     *
      * @param string|iterable $files     A filename, an array of files, or a \Traversable instance to change group
      * @param string|int      $group     A group name or number
      * @param bool            $recursive Whether change the group recursively or not