feature #32295 [FrameworkBundle] Add autowiring alias for PSR-14 (nicolas-grekas)

This PR was merged into the 4.4 branch.

Discussion
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[FrameworkBundle] Add autowiring alias for PSR-14

| Q             | A
| ------------- | ---
| Branch?       | 4.4
| Bug fix?      | no
| New feature?  | yes
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| License       | MIT
| Doc PR        | -

Commits
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2d5bcda9e7 [FrameworkBundle] Add autowiring alias for PSR-14

Author: Tobion

DependencyInjection/FrameworkExtension.php

@@ -16,6 +16,7 @@
 use Http\Client\HttpClient;
 use Psr\Cache\CacheItemPoolInterface;
 use Psr\Container\ContainerInterface as PsrContainerInterface;
+use Psr\EventDispatcher\EventDispatcherInterface as PsrEventDispatcherInterface;
 use Psr\Http\Client\ClientInterface;
 use Psr\Log\LoggerAwareInterface;
 use Symfony\Bridge\Monolog\Processor\DebugProcessor;
@@ -154,6 +155,10 @@ public function load(array $configs, ContainerBuilder $container)
         $loader->load('fragment_renderer.xml');
         $loader->load('error_catcher.xml');
 
+        if (interface_exists(PsrEventDispatcherInterface::class)) {
+            $container->setAlias(PsrEventDispatcherInterface::class, 'event_dispatcher');
+        }
+
         $container->registerAliasForArgument('parameter_bag', PsrContainerInterface::class);
 
         if (class_exists(Application::class)) {