Issue #3259169 by longwave, daffie: [Symfony 6]...

Issue #3259169 by longwave, daffie: [Symfony 6] Drupal\Core\Controller\ControllerResolver does not need to extend Symfony

core/lib/Drupal/Core/Controller/ControllerResolver.php

@@ -5,7 +5,6 @@
 use Drupal\Core\DependencyInjection\ClassResolverInterface;
 use Symfony\Bridge\PsrHttpMessage\HttpMessageFactoryInterface;
 use Symfony\Component\HttpFoundation\Request;
-use Symfony\Component\HttpKernel\Controller\ControllerResolver as BaseControllerResolver;
 
 /**
  * ControllerResolver to enhance controllers beyond Symfony's basic handling.
@@ -22,7 +21,7 @@
  *    controller by using a service:method notation (Symfony uses the same
  *    convention).
  */
-class ControllerResolver extends BaseControllerResolver implements ControllerResolverInterface {
+class ControllerResolver implements ControllerResolverInterface {
 
   /**
    * The class resolver.