[FrameworkBundle] Fix JsonEncoder config on low-deps

Author: alexandre-daubois

src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/ConfigurationTest.php

@@ -22,6 +22,7 @@
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\HtmlSanitizer\HtmlSanitizer;
 use Symfony\Component\HttpClient\HttpClient;
+use Symfony\Component\JsonEncoder\JsonEncoder;
 use Symfony\Component\Lock\Store\SemaphoreStore;
 use Symfony\Component\Mailer\Mailer;
 use Symfony\Component\Messenger\MessageBusInterface;
@@ -971,7 +972,7 @@ class_exists(SemaphoreStore::class) && SemaphoreStore::isSupported() ? 'semaphor
                 'enabled' => !class_exists(FullStack::class) && class_exists(RemoteEvent::class),
             ],
             'json_encoder' => [
-                'enabled' => false,
+                'enabled' => !class_exists(FullStack::class) && class_exists(JsonEncoder::class),
                 'paths' => [],
             ],
         ];

src/Symfony/Bundle/FrameworkBundle/composer.json

@@ -69,6 +69,7 @@
         "symfony/workflow": "^6.4|^7.0",
         "symfony/yaml": "^6.4|^7.0",
         "symfony/property-info": "^6.4|^7.0",
+        "symfony/json-encoder": "^7.3",
         "symfony/uid": "^6.4|^7.0",
         "symfony/web-link": "^6.4|^7.0",
         "symfony/webhook": "^7.2",