Merge branch '4.4'

* 4.4: (28 commits)
  [FrameworkBundle] Fix framework bundle lock configuration not working as expected
  [Validator] Add the missing translations for the Azerbaijani locale
  [HttpClient] workaround bad Content-Length sent by old libcurl
  [Cache] dont override native Memcached options
  Fix CS
  Fix exceptions (PDOException) error code type
  [ErrorHandler] fix return-type patching logic
  [Messenger] Added support for `from_transport` attribute on `messenger.message_handler` tag
  [ErrorHandler] don't throw deprecations for return-types by default
  ensure legacy event dispatcher compatibility
  ensure legacy event dispatcher compatibility
  Fix return type of Process::restart().
  [Cache] fail gracefully when locking is not supported
  [HttpKernel] compress files generated by the profiler
  tweak deprecation messages and changelog
  fix version in @deprecated annotation
  Use VarCloner data instead of legacy array for query params
  [Security] use LegacyEventDispatcherProxy
  [HttpClient] fix undefined index access
  [HttpClient] fix race condition when reading response with informational status
  ...

Author: nicolas-grekas

Mailer.php

@@ -11,6 +11,7 @@
 
 namespace Symfony\Component\Mailer;
 
+use Symfony\Component\EventDispatcher\LegacyEventDispatcherProxy;
 use Symfony\Component\Mailer\Event\MessageEvent;
 use Symfony\Component\Mailer\Messenger\SendEmailMessage;
 use Symfony\Component\Mailer\Transport\TransportInterface;
@@ -31,7 +32,7 @@ public function __construct(TransportInterface $transport, MessageBusInterface $
     {
         $this->transport = $transport;
         $this->bus = $bus;
-        $this->dispatcher = $dispatcher;
+        $this->dispatcher = LegacyEventDispatcherProxy::decorate($dispatcher);
     }
 
     public function send(RawMessage $message, Envelope $envelope = null): void

Transport/AbstractTransport.php

@@ -14,6 +14,7 @@
 use Psr\Log\LoggerInterface;
 use Psr\Log\NullLogger;
 use Symfony\Component\Mailer\Envelope;
+use Symfony\Component\EventDispatcher\LegacyEventDispatcherProxy;
 use Symfony\Component\Mailer\Event\MessageEvent;
 use Symfony\Component\Mailer\SentMessage;
 use Symfony\Component\Mime\Address;
@@ -32,7 +33,7 @@ abstract class AbstractTransport implements TransportInterface
 
     public function __construct(EventDispatcherInterface $dispatcher = null, LoggerInterface $logger = null)
     {
-        $this->dispatcher = $dispatcher;
+        $this->dispatcher = LegacyEventDispatcherProxy::decorate($dispatcher);
         $this->logger = $logger ?: new NullLogger();
     }