[Messenger] Fix registering message handlers

Author: nicolas-grekas

src/Symfony/Component/Messenger/DependencyInjection/MessengerPass.php

@@ -143,7 +143,7 @@ private function registerHandlers(ContainerBuilder $container, array $busIds)
                     }
 
                     if ('__invoke' !== $method) {
-                        $wrapperDefinition = (new Definition('callable'))->addArgument([new Reference($serviceId), $method])->setFactory('Closure::fromCallable');
+                        $wrapperDefinition = (new Definition('Closure'))->addArgument([new Reference($serviceId), $method])->setFactory('Closure::fromCallable');
 
                         $definitions[$definitionId = '.messenger.method_on_object_wrapper.'.ContainerBuilder::hash($message.':'.$priority.':'.$serviceId.':'.$method)] = $wrapperDefinition;
                     } else {

src/Symfony/Component/Messenger/Tests/DependencyInjection/MessengerPassTest.php

@@ -255,7 +255,7 @@ public function testGetClassesAndMethodsAndPrioritiesFromTheSubscriber()
         $dummyHandlerReference = $dummyHandlerDescriptorDefinition->getArgument(0);
         $dummyHandlerDefinition = $container->getDefinition($dummyHandlerReference);
 
-        $this->assertSame('callable', $dummyHandlerDefinition->getClass());
+        $this->assertSame('Closure', $dummyHandlerDefinition->getClass());
         $this->assertEquals([new Reference(HandlerMappingMethods::class), 'dummyMethod'], $dummyHandlerDefinition->getArgument(0));
         $this->assertSame(['Closure', 'fromCallable'], $dummyHandlerDefinition->getFactory());