feat(laravel): add support for backed enum normalizers

Closes: #6906
Signed-off-by: Tobias Oitzinger <[email protected]>

src/Laravel/ApiPlatformProvider.php

@@ -222,6 +222,7 @@
 use Symfony\Component\Serializer\NameConverter\MetadataAwareNameConverter;
 use Symfony\Component\Serializer\NameConverter\NameConverterInterface;
 use Symfony\Component\Serializer\Normalizer\ArrayDenormalizer;
+use Symfony\Component\Serializer\Normalizer\BackedEnumNormalizer;
 use Symfony\Component\Serializer\Normalizer\DateIntervalNormalizer;
 use Symfony\Component\Serializer\Normalizer\DateTimeNormalizer;
 use Symfony\Component\Serializer\Normalizer\DateTimeZoneNormalizer;
@@ -1019,6 +1020,7 @@ public function register(): void
             $list->insert($app->make(DateTimeZoneNormalizer::class), -915);
             $list->insert($app->make(DateIntervalNormalizer::class), -915);
             $list->insert($app->make(DateTimeNormalizer::class), -910);
+            $list->insert($app->make(BackedEnumNormalizer::class), -910);
             $list->insert($app->make(ObjectNormalizer::class), -1000);
             $list->insert($app->make(ItemNormalizer::class), -895);
             $list->insert($app->make(OpenApiNormalizer::class), -780);