fix: fix phpstan errors

Author: Maxcastel

src/Mcp/Server/Handler.php

@@ -74,7 +74,7 @@ public function handle(Request $request, SessionInterface $session): Response|Er
         } else {
             \assert($request instanceof CallToolRequest);
             $operationNameOrUri = $request->name;
-            $arguments = $request->arguments ?? [];
+            $arguments = $request->arguments;
             $this->logger->debug('Executing tool', ['name' => $operationNameOrUri, 'arguments' => $arguments]);
         }
 

src/Symfony/Doctrine/EventListener/PurgeHttpCacheListener.php

@@ -145,7 +145,7 @@ private function gatherRelationTags(EntityManagerInterface $em, object $entity):
 
         /** @var array|AssociationMapping $associationMapping according to the version of doctrine orm */
         foreach ($associationMappings as $property => $associationMapping) {
-            if ($associationMapping instanceof AssociationMapping && ($associationMapping->targetEntity ?? null) && !$this->resourceClassResolver->isResourceClass($associationMapping->targetEntity)) {
+            if ($associationMapping instanceof AssociationMapping && $associationMapping->targetEntity && !$this->resourceClassResolver->isResourceClass($associationMapping->targetEntity)) {
                 return;
             }
             if (!$this->propertyAccessor->isReadable($entity, $property)) {