Merge branch '6.4' into 7.0

* 6.4:
  fix merge
  [AssetMapper] Split test dirs in tests
  Fix typo
  Change incorrect check for the `stateless` request attribute
  use copy() instead of rename() on Windows
  test: kebab-case to snake_case
  [PropertyInfo] Handle collection in PhpStan same as PhpDoc
  [Messenger] Passing to `WorkerMessageRetriedEvent` envelope with actual stamps after sent

Author: xabbuh

Tests/BinaryFileResponseTest.php

@@ -344,7 +344,7 @@ public function testAcceptRangeOnUnsafeMethods()
         $this->assertEquals('none', $response->headers->get('Accept-Ranges'));
     }
 
-    public function testAcceptRangeNotOverriden()
+    public function testAcceptRangeNotOverridden()
     {
         $request = Request::create('/', 'POST');
         $response = new BinaryFileResponse(__DIR__.'/File/Fixtures/test.gif', 200, ['Content-Type' => 'application/octet-stream']);