[DI] add #[Required] where applicable

Author: kbond

Controller/AbstractController.php

@@ -42,6 +42,7 @@
 use Symfony\Component\Serializer\SerializerInterface;
 use Symfony\Component\WebLink\EventListener\AddLinkHeaderListener;
 use Symfony\Component\WebLink\GenericLinkProvider;
+use Symfony\Contracts\Service\Attribute\Required;
 use Symfony\Contracts\Service\ServiceSubscriberInterface;
 use Twig\Environment;
 
@@ -60,6 +61,7 @@ abstract class AbstractController implements ServiceSubscriberInterface
     /**
      * @required
      */
+    #[Required]
     public function setContainer(ContainerInterface $container): ?ContainerInterface
     {
         $previous = $this->container;