style: various cs fixes (#6504)

* cs: fixes

* chore: phpstan fixes

Author: soyuka

Serializer/ItemNormalizer.php

@@ -114,7 +114,7 @@ public function supportsDenormalization(mixed $data, string $type, ?string $form
      */
     public function denormalize(mixed $data, string $type, ?string $format = null, array $context = []): never
     {
-        throw new LogicException(sprintf('%s is a read-only format.', self::FORMAT));
+        throw new LogicException(\sprintf('%s is a read-only format.', self::FORMAT));
     }
 
     /**
@@ -305,7 +305,7 @@ private function isMaxDepthReached(array $attributesMetadata, string $class, str
             return false;
         }
 
-        $key = sprintf(self::DEPTH_KEY_PATTERN, $class, $attribute);
+        $key = \sprintf(self::DEPTH_KEY_PATTERN, $class, $attribute);
         if (!isset($context[$key])) {
             $context[$key] = 1;
 

Serializer/ObjectNormalizer.php

@@ -117,6 +117,6 @@ public function supportsDenormalization(mixed $data, string $type, ?string $form
      */
     public function denormalize(mixed $data, string $type, ?string $format = null, array $context = []): mixed
     {
-        throw new LogicException(sprintf('%s is a read-only format.', self::FORMAT));
+        throw new LogicException(\sprintf('%s is a read-only format.', self::FORMAT));
     }
 }