Merge branch '6.0' into 6.1

* 6.0: (23 commits)
  Fix composer on appveyor
  fix bootstrap_3_layout ChoiceType's expanded label_html
  [Messenger][Security/Core] Remove legacy class aliases
  [PropertyAccess] Fix typo in PropertyAccessor::readProperty() DocBlock
  [PropertyInfo] PhpStanExtractor namespace missmatch issue
  [VarExporter] Fix exporting objects with readonly properties
  [ExpressionLanguage] Fix matches when the regexp is not valid
  [Messenger] Add mysql indexes back and work around deadlocks using soft-delete
  Add BC layer to handle old objects already present in cache
  [RateLimiter] Always store SlidingWindows with an expiration set
  [Validator] Fix File constraint invalid max size exception message
  [Console] Fix exit status on uncaught exception with negative code
  [Validator] fix #43345 @Assert\DivisibleBy
  [HttpClient] fix 303 after PUT and sending chunked requests
  [HttpClient] always send Content-Type when a body is passed
  [HttpClient] always send Content-Length when a body is passed
  [HttpClient] fix sending Content-Length/Type for POST
  Fix merge
  [HttpClient] fix sending PUT requests with curl
  Fix locales format in CrowdinProvider
  ...

Author: nicolas-grekas

Transport/AmqpFactory.php

@@ -33,7 +33,3 @@ public function createExchange(\AMQPChannel $channel): \AMQPExchange
         return new \AMQPExchange($channel);
     }
 }
-
-if (!class_exists(\Symfony\Component\Messenger\Transport\AmqpExt\AmqpFactory::class, false)) {
-    class_alias(AmqpFactory::class, \Symfony\Component\Messenger\Transport\AmqpExt\AmqpFactory::class);
-}

Transport/AmqpReceivedStamp.php

@@ -37,7 +37,3 @@ public function getQueueName(): string
         return $this->queueName;
     }
 }
-
-if (!class_exists(\Symfony\Component\Messenger\Transport\AmqpExt\AmqpReceivedStamp::class, false)) {
-    class_alias(AmqpReceivedStamp::class, \Symfony\Component\Messenger\Transport\AmqpExt\AmqpReceivedStamp::class);
-}

Transport/AmqpReceiver.php

@@ -144,7 +144,3 @@ private function findAmqpStamp(Envelope $envelope): AmqpReceivedStamp
         return $amqpReceivedStamp;
     }
 }
-
-if (!class_exists(\Symfony\Component\Messenger\Transport\AmqpExt\AmqpReceiver::class, false)) {
-    class_alias(AmqpReceiver::class, \Symfony\Component\Messenger\Transport\AmqpExt\AmqpReceiver::class);
-}

Transport/AmqpSender.php

@@ -80,7 +80,3 @@ public function send(Envelope $envelope): Envelope
         return $envelope;
     }
 }
-
-if (!class_exists(\Symfony\Component\Messenger\Transport\AmqpExt\AmqpSender::class, false)) {
-    class_alias(AmqpSender::class, \Symfony\Component\Messenger\Transport\AmqpExt\AmqpSender::class);
-}

Transport/AmqpStamp.php

@@ -88,7 +88,3 @@ public static function createWithAttributes(array $attributes, self $previousSta
         );
     }
 }
-
-if (!class_exists(\Symfony\Component\Messenger\Transport\AmqpExt\AmqpStamp::class, false)) {
-    class_alias(AmqpStamp::class, \Symfony\Component\Messenger\Transport\AmqpExt\AmqpStamp::class);
-}

Transport/AmqpTransport.php

@@ -101,7 +101,3 @@ private function getSender(): AmqpSender
         return $this->sender ??= new AmqpSender($this->connection, $this->serializer);
     }
 }
-
-if (!class_exists(\Symfony\Component\Messenger\Transport\AmqpExt\AmqpTransport::class, false)) {
-    class_alias(AmqpTransport::class, \Symfony\Component\Messenger\Transport\AmqpExt\AmqpTransport::class);
-}

Transport/AmqpTransportFactory.php

@@ -32,7 +32,3 @@ public function supports(string $dsn, array $options): bool
         return str_starts_with($dsn, 'amqp://') || str_starts_with($dsn, 'amqps://');
     }
 }
-
-if (!class_exists(\Symfony\Component\Messenger\Transport\AmqpExt\AmqpTransportFactory::class, false)) {
-    class_alias(AmqpTransportFactory::class, \Symfony\Component\Messenger\Transport\AmqpExt\AmqpTransportFactory::class);
-}

Transport/Connection.php

@@ -560,7 +560,3 @@ private function getRoutingKeyForMessage(?AmqpStamp $amqpStamp): ?string
         return $amqpStamp?->getRoutingKey() ?? $this->getDefaultPublishRoutingKey();
     }
 }
-
-if (!class_exists(\Symfony\Component\Messenger\Transport\AmqpExt\Connection::class, false)) {
-    class_alias(Connection::class, \Symfony\Component\Messenger\Transport\AmqpExt\Connection::class);
-}