improve array normalizer performance

Author: DavidBadura

src/Normalizer/ArrayNormalizer.php

@@ -32,7 +32,11 @@ public function normalize(mixed $value): array|null
             throw InvalidArgument::withWrongType('array|null', $value);
         }
 
-        return array_map(fn (mixed $value): mixed => $this->normalizer->normalize($value), $value);
+        foreach ($value as &$item) {
+            $item = $this->normalizer->normalize($item);
+        }
+
+        return $value;
     }
 
     /** @return array<array-key, mixed>|null */
@@ -46,7 +50,11 @@ public function denormalize(mixed $value): array|null
             throw InvalidArgument::withWrongType('array|null', $value);
         }
 
-        return array_map(fn (mixed $value): mixed => $this->normalizer->denormalize($value), $value);
+        foreach ($value as &$item) {
+            $item = $this->normalizer->denormalize($item);
+        }
+
+        return $value;
     }
 
     public function setHydrator(Hydrator $hydrator): void