bug symfony#45299 [DependencyInjection] Fix AsEventListener not working on decorators (LANGERGabrielle)

This PR was merged into the 5.4 branch.

Discussion
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[DependencyInjection] Fix AsEventListener not working on decorators

| Q             | A
| ------------- | ---
| Branch?       | 5.4
| Bug fix?      | yes
| New feature?  | no
| Deprecations? | no
| Tickets       |
| License       | MIT
| Doc PR        |

When using the `AsEventListener` on a decorator, it is ignored instead of registering the decorator as an event listener. This is because autoconfigured tags are not applied to decorators since symfony#30417.

`EventSubscriberInterface` works as expected since symfony#38999, when the `kernel.event_subscriber'` tag was added to a list of "behavior describing tags" which can be autoconfigured onto decorators.

This PR adds `kernel.event_listener` to this default list of tags, making `AsEventListener` work as expected on decorators.

Commits
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5fbb217 Added `kernel.event_listener` to the default list of behavior describing tags, fixing AsEventListener attribute not working on decorators.

Author: fabpot

src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php

@@ -637,6 +637,7 @@ public function load(array $configs, ContainerBuilder $container)
             'container.service_locator',
             'container.service_subscriber',
             'kernel.event_subscriber',
+            'kernel.event_listener',
             'kernel.locale_aware',
             'kernel.reset',
         ]);

src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php

@@ -1971,6 +1971,7 @@ public function testRegisterParameterCollectingBehaviorDescribingTags()
             'container.service_locator',
             'container.service_subscriber',
             'kernel.event_subscriber',
+            'kernel.event_listener',
             'kernel.locale_aware',
             'kernel.reset',
         ], $container->getParameter('container.behavior_describing_tags'));