Merge branch '6.4' into 7.0

* 6.4:
  [AssetMapper] Allow simple, relative paths in importmap.php
  [PropertyInfo] Make isWriteable() more consistent with isReadable() when checking snake_case properties
  [AssetMapper] Add support for CSS files in the importmap
  [Messenger] Add `--all` option to the `messenger:failed:remove` command
  Fix merge
  fix #51235 - fix the order of merging of serializationContext and self::CONTEXT_DENORMALIZE
  [HttpClient] Fix Static Code Analyzer issue with JsonMockResponse
  [Messenger] Fix exiting `FailedMessagesRetryCommand`
  [Serializer] Fix reindex normalizedData array in AbstractObjectNormalizer::denormalize()
  remove an unreachable code branch
  [Validator] Fix `File::$extensions`’ PHPDoc
  [Mime] Fix email (de)serialization issues
  [FrameworkBundle][WebProfilerBundle][Console][Form][HttpKernel][PropertyInfo][Validator] Remove optional before required param
  Replace usages of SkippedTestSuiteError with markTestSkipped() call
  Update InteractiveAuthenticatorInterface description wording to match documentation
  [Serializer] Fix parsing XML root node attributes
  fix parsing of payload timestamp to DateTimeImmutable
  Fix routing to multiple fallback transports
  Fix missing stamps in delayed message handling
  [DoctrineBridge] Ignore invalid stores in `LockStoreSchemaListener` raised by `StoreFactory`

Author: nicolas-grekas

Response/JsonMockResponse.php

@@ -15,6 +15,9 @@
 
 class JsonMockResponse extends MockResponse
 {
+    /**
+     * @param mixed $body Any value that `json_encode()` can serialize
+     */
     public function __construct(mixed $body = [], array $info = [])
     {
         try {

Tests/HttpClientTestCase.php

@@ -11,7 +11,6 @@
 
 namespace Symfony\Component\HttpClient\Tests;
 
-use PHPUnit\Framework\SkippedTestSuiteError;
 use Symfony\Component\HttpClient\Exception\ClientException;
 use Symfony\Component\HttpClient\Exception\TransportException;
 use Symfony\Component\HttpClient\Internal\ClientState;
@@ -318,7 +317,7 @@ private static function startVulcain(HttpClientInterface $client)
         }
 
         if ('\\' === \DIRECTORY_SEPARATOR) {
-            throw new SkippedTestSuiteError('Testing with the "vulcain" is not supported on Windows.');
+            self::markTestSkipped('Testing with the "vulcain" is not supported on Windows.');
         }
 
         $process = new Process(['vulcain'], null, [
@@ -335,14 +334,14 @@ private static function startVulcain(HttpClientInterface $client)
 
         if (!$process->isRunning()) {
             if ('\\' !== \DIRECTORY_SEPARATOR && 127 === $process->getExitCode()) {
-                throw new SkippedTestSuiteError('vulcain binary is missing');
+                self::markTestSkipped('vulcain binary is missing');
             }
 
             if ('\\' !== \DIRECTORY_SEPARATOR && 126 === $process->getExitCode()) {
-                throw new SkippedTestSuiteError('vulcain binary is not executable');
+                self::markTestSkipped('vulcain binary is not executable');
             }
 
-            throw new SkippedTestSuiteError((new ProcessFailedException($process))->getMessage());
+            self::markTestSkipped((new ProcessFailedException($process))->getMessage());
         }
 
         self::$vulcainStarted = true;