bug #48210 [Console] Fix signal handlers called after event listeners and skip exit (GromNaN)

This PR was merged into the 5.4 branch.

Discussion
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[Console]  Fix signal handlers called after event listeners and skip exit

| Q             | A
| ------------- | ---
| Branch?       | 5.4
| Bug fix?      | yes
| New feature?  | no
| Deprecations? | no
| Tickets       | Fix #48205
| License       | MIT
| Doc PR        | -

Restore registration of signal handlers after the event dispatcher.
https://github.com/symfony/symfony/pull/45333/files#diff-8f1fd83284712ab08cb5d391da70ea0e78719ef08db852596997a4085848a026L1009

Commits
-------

eebfd6eb0a Fix signal handlers called after event listeners and skip exit

Author: nicolas-grekas

Application.php

@@ -1012,10 +1012,6 @@ protected function doRunCommand(Command $command, InputInterface $input, OutputI
                         });
                     }
                 }
-
-                foreach ($commandSignals as $signal) {
-                    $this->signalRegistry->register($signal, [$command, 'handleSignal']);
-                }
             }
 
             if (null !== $this->dispatcher) {
@@ -1034,6 +1030,10 @@ protected function doRunCommand(Command $command, InputInterface $input, OutputI
                     });
                 }
             }
+
+            foreach ($commandSignals as $signal) {
+                $this->signalRegistry->register($signal, [$command, 'handleSignal']);
+            }
         }
 
         if (null === $this->dispatcher) {

Tests/ApplicationTest.php

@@ -1975,6 +1975,21 @@ public function testSignalableCommandInterfaceWithoutSignals()
         $this->assertSame(0, $application->run(new ArrayInput(['signal'])));
     }
 
+    public function testSignalableCommandHandlerCalledAfterEventListener()
+    {
+        $command = new SignableCommand();
+
+        $subscriber = new SignalEventSubscriber();
+
+        $dispatcher = new EventDispatcher();
+        $dispatcher->addSubscriber($subscriber);
+
+        $application = $this->createSignalableApplication($command, $dispatcher);
+        $application->setSignalsToDispatchEvent(\SIGUSR1);
+        $this->assertSame(1, $application->run(new ArrayInput(['signal'])));
+        $this->assertSame([SignalEventSubscriber::class, SignableCommand::class], $command->signalHandlers);
+    }
+
     /**
      * @group tty
      */
@@ -2076,6 +2091,7 @@ public function isEnabled(): bool
 class BaseSignableCommand extends Command
 {
     public $signaled = false;
+    public $signalHandlers = [];
     public $loop = 1000;
     private $emitsSignal;
 
@@ -2116,6 +2132,7 @@ public function getSubscribedSignals(): array
     public function handleSignal(int $signal): void
     {
         $this->signaled = true;
+        $this->signalHandlers[] = __CLASS__;
     }
 }
 
@@ -2127,6 +2144,7 @@ public function onSignal(ConsoleSignalEvent $event): void
     {
         $this->signaled = true;
         $event->getCommand()->signaled = true;
+        $event->getCommand()->signalHandlers[] = __CLASS__;
     }
 
     public static function getSubscribedEvents(): array