minor symfony#58152 [AssetMapper] fix tests on Windows (xabbuh)

This PR was merged into the 7.2 branch.

Discussion
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[AssetMapper] fix tests on Windows

| Q             | A
| ------------- | ---
| Branch?       | 7.2
| Bug fix?      | no
| New feature?  | no
| Deprecations? | no
| Issues        |
| License       | MIT

Commits
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52a5d5f fix tests on Windows

Author: xabbuh

src/Symfony/Component/AssetMapper/Tests/ImportMap/RemotePackageStorageTest.php

@@ -62,7 +62,9 @@ public function testSaveThrowsWhenFailing()
             $storage->save($entry, 'any content');
         } finally {
             if ('\\' === \DIRECTORY_SEPARATOR) {
-                $this->filesystem->chmod($vendorDir.'/module_specifier/module_specifier.index.js', 0777);
+                foreach (glob($vendorDir.'/module_specifier/*') as $file) {
+                    $this->filesystem->chmod($file, 0777);
+                }
             } else {
                 $this->filesystem->chmod($vendorDir.'/module_specifier/', 0777);
             }