Merge branch '6.4' into 7.0

* 6.4:
  Sync .github/expected-missing-return-types.diff
  [WebProfilerBundle] Fix the design of the compact toolbar button
  [AssetMapper] Improve link generation script
  fix merge
  consistently use dates in UTC in Doctrine connection tests
  Add missing Chinese(zh_TW) translations
  [Intl] [Emoji] Fix emoji files (remove wrong characters / add missing data)
  [Translation] Crowdin Bridge: use the project language mapping
  [VarExporter] Nitpicking in README.md
  [DoctrineBridge] Adapt deprecation message to include ODM bundle attribute name
  Added missing Serbian (sr_Cyrl) translation
  [Validator] Add missing Serbian translation
  [Validator] Add missing arabic translation
  [Validator] updated Albanian translation
  [Clock] Fix calling `mockTime()` in `setUpBeforeClass()`

Author: nicolas-grekas

ContainerAwareEventManager.php

@@ -200,7 +200,7 @@ private function initializeSubscribers(): void
                 continue;
             }
 
-            throw new \InvalidArgumentException(sprintf('Using Doctrine subscriber "%s" is not allowed, declare it as a listener instead.', get_debug_type($listener)));
+            throw new \InvalidArgumentException(sprintf('Using Doctrine subscriber "%s" is not allowed. Register it as a listener instead, using e.g. the #[AsDoctrineListener] or #[AsDocumentListener] attribute.', \is_object($listener) ? get_debug_type($listener) : $listener));
         }
     }
 

Tests/ContainerAwareEventManagerTest.php

@@ -42,7 +42,7 @@ public function testUsingDoctrineSubscribersThrows()
         $this->evm = new ContainerAwareEventManager($this->container, [new MySubscriber(['foo'])]);
 
         $this->expectException(\InvalidArgumentException::class);
-        $this->expectExceptionMessage('Using Doctrine subscriber "Symfony\Bridge\Doctrine\Tests\MySubscriber" is not allowed, declare it as a listener instead.');
+        $this->expectExceptionMessage('Using Doctrine subscriber "Symfony\Bridge\Doctrine\Tests\MySubscriber" is not allowed. Register it as a listener instead, using e.g. the #[AsDoctrineListener] or #[AsDocumentListener] attribute.');
         $this->evm->getListeners('foo');
     }