fix compatibility with symfony/scheduler < 7.3

Author: xabbuh

DependencyInjection/FrameworkExtension.php

@@ -156,6 +156,7 @@
 use Symfony\Component\Scheduler\Attribute\AsPeriodicTask;
 use Symfony\Component\Scheduler\Attribute\AsSchedule;
 use Symfony\Component\Scheduler\Messenger\SchedulerTransportFactory;
+use Symfony\Component\Scheduler\Messenger\Serializer\Normalizer\SchedulerTriggerNormalizer;
 use Symfony\Component\Security\Core\AuthenticationEvents;
 use Symfony\Component\Security\Core\Exception\AuthenticationException;
 use Symfony\Component\Security\Csrf\CsrfTokenManagerInterface;
@@ -2220,6 +2221,11 @@ private function registerSchedulerConfiguration(ContainerBuilder $container, Php
         if (!$this->hasConsole()) {
             $container->removeDefinition('console.command.scheduler_debug');
         }
+
+        // BC layer Scheduler < 7.3
+        if (!class_exists(SchedulerTriggerNormalizer::class)) {
+            $container->removeDefinition('serializer.normalizer.scheduler_trigger');
+        }
     }
 
     private function registerMessengerConfiguration(array $config, ContainerBuilder $container, PhpFileLoader $loader, bool $validationEnabled): void