Add PHPUnit UsesClass attributes for Filesystem, AssetCopy, and AssetFetch

Co-authored-by: dkarlovi <[email protected]>

Author: Copilot

composer.json renamed to composer.json~

@@ -24,6 +24,9 @@
  * @internal
  */
 #[\PHPUnit\Framework\Attributes\CoversClass(AssetQueue::class)]
+#[\PHPUnit\Framework\Attributes\UsesClass(Filesystem::class)]
+#[\PHPUnit\Framework\Attributes\UsesClass(AssetCopy::class)]
+#[\PHPUnit\Framework\Attributes\UsesClass(AssetFetch::class)]
 class AssetQueueTest extends TestCase
 {
     private string $tempDir;