diff --git a/.gitattributes b/.gitattributes
index 14c3c3594..84c7add05 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,3 +1,4 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
-/.git* export-ignore
+/.gitattributes export-ignore
+/.gitignore export-ignore
diff --git a/.github/PULL_REQUEST_TEMPLATE.md b/.github/PULL_REQUEST_TEMPLATE.md
deleted file mode 100644
index 4689c4dad..000000000
--- a/.github/PULL_REQUEST_TEMPLATE.md
+++ /dev/null
@@ -1,8 +0,0 @@
-Please do not submit any Pull Requests here. They will be closed.
----
-
-Please submit your PR here instead:
-https://github.com/symfony/symfony
-
-This repository is what we call a "subtree split": a read-only subset of that main repository.
-We're looking forward to your PR there!
diff --git a/.github/workflows/check-subtree-split.yml b/.github/workflows/check-subtree-split.yml
deleted file mode 100644
index 16be48bae..000000000
--- a/.github/workflows/check-subtree-split.yml
+++ /dev/null
@@ -1,37 +0,0 @@
-name: Check subtree split
-
-on:
-  pull_request_target:
-
-jobs:
-  close-pull-request:
-    runs-on: ubuntu-latest
-
-    steps:
-    - name: Close pull request
-      uses: actions/github-script@v6
-      with:
-        script: |
-          if (context.repo.owner === "symfony") {
-            github.rest.issues.createComment({
-              owner: "symfony",
-              repo: context.repo.repo,
-              issue_number: context.issue.number,
-              body: `
-          Thanks for your Pull Request! We love contributions.
-
-          However, you should instead open your PR on the main repository:
-          https://github.com/symfony/symfony
-
-          This repository is what we call a "subtree split": a read-only subset of that main repository.
-          We're looking forward to your PR there!
-          `
-            });
-
-            github.rest.pulls.update({
-              owner: "symfony",
-              repo: context.repo.repo,
-              pull_number: context.issue.number,
-              state: "closed"
-            });
-          }
diff --git a/DependencyInjection/FrameworkExtension.php b/DependencyInjection/FrameworkExtension.php
index 0f44e66a7..de513066c 100644
--- a/DependencyInjection/FrameworkExtension.php
+++ b/DependencyInjection/FrameworkExtension.php
@@ -1912,18 +1912,19 @@ private function registerSerializerConfiguration(array $config, ContainerBuilder
             $container->setParameter('serializer.default_context', $defaultContext);
         }
 
+        $arguments = $container->getDefinition('serializer.normalizer.object')->getArguments();
+        $context = [];
+
         if (isset($config['circular_reference_handler']) && $config['circular_reference_handler']) {
-            $arguments = $container->getDefinition('serializer.normalizer.object')->getArguments();
-            $context = ($arguments[6] ?? $defaultContext) + ['circular_reference_handler' => new Reference($config['circular_reference_handler'])];
+            $context += ($arguments[6] ?? $defaultContext) + ['circular_reference_handler' => new Reference($config['circular_reference_handler'])];
             $container->getDefinition('serializer.normalizer.object')->setArgument(5, null);
-            $container->getDefinition('serializer.normalizer.object')->setArgument(6, $context);
         }
 
         if ($config['max_depth_handler'] ?? false) {
-            $arguments = $container->getDefinition('serializer.normalizer.object')->getArguments();
-            $context = ($arguments[6] ?? $defaultContext) + ['max_depth_handler' => new Reference($config['max_depth_handler'])];
-            $container->getDefinition('serializer.normalizer.object')->setArgument(6, $context);
+            $context += ($arguments[6] ?? $defaultContext) + ['max_depth_handler' => new Reference($config['max_depth_handler'])];
         }
+
+        $container->getDefinition('serializer.normalizer.object')->setArgument(6, $context);
     }
 
     private function registerPropertyInfoConfiguration(ContainerBuilder $container, PhpFileLoader $loader): void
@@ -2178,10 +2179,9 @@ private function registerMessengerConfiguration(array $config, ContainerBuilder
                 ->setFactory([new Reference('messenger.transport_factory'), 'createTransport'])
                 ->setArguments([$transport['dsn'], $transport['options'] + ['transport_name' => $name], new Reference($serializerId)])
                 ->addTag('messenger.receiver', [
-                        'alias' => $name,
-                        'is_failure_transport' => \in_array($name, $failureTransports),
-                    ]
-                )
+                    'alias' => $name,
+                    'is_failure_transport' => \in_array($name, $failureTransports),
+                ])
             ;
             $container->setDefinition($transportId = 'messenger.transport.'.$name, $transportDefinition);
             $senderAliases[$name] = $transportId;
diff --git a/Resources/config/serializer.php b/Resources/config/serializer.php
index bd3f863aa..1135d3752 100644
--- a/Resources/config/serializer.php
+++ b/Resources/config/serializer.php
@@ -128,6 +128,8 @@
                 service('property_info')->ignoreOnInvalid(),
                 service('serializer.mapping.class_discriminator_resolver')->ignoreOnInvalid(),
                 null,
+                null,
+                service('property_info')->ignoreOnInvalid(),
             ])
             ->tag('serializer.normalizer', ['priority' => -1000])
 
@@ -139,7 +141,6 @@
                 service('serializer.mapping.class_discriminator_resolver')->ignoreOnInvalid(),
                 null,
                 [],
-                service('property_info')->ignoreOnInvalid(),
             ])
 
         ->set('serializer.denormalizer.array', ArrayDenormalizer::class)
diff --git a/Tests/Translation/TranslatorTest.php b/Tests/Translation/TranslatorTest.php
index 2ef550ef0..c31119ad3 100644
--- a/Tests/Translation/TranslatorTest.php
+++ b/Tests/Translation/TranslatorTest.php
@@ -272,7 +272,7 @@ protected function getLoader()
         $loader
             ->expects($this->exactly(7))
             ->method('load')
-            ->willReturnOnConsecutiveCalls(
+            ->willReturn(
                 $this->getCatalogue('fr', [
                     'foo' => 'foo (FR)',
                 ]),