Merge branch '4.4' into 5.0

* 4.4:
  [Debug] fix ClassNotFoundFatalErrorHandler
  [Routing] Fix using a custom matcher & generator dumper class
  [Serializer] Fix cache in MetadataAwareNameConverter
  [Dotenv] Fixed infinite loop with missing quote followed by quoted value
  [HttpClient] Added missing sprintf
  [TwigBridge] button_widget now has its title attr translated even if its label = null or false
  [PhpUnitBridge] When using phpenv + phpenv-composer plugin, composer executable is wrapped into a bash script
  [Messenger] Added check if json_encode succeeded
  [Messenger] Added check if json_encode succeeded
  [FrameworkBundle][ContainerLintCommand] Only skip .errored. services
  [HttpClient] fix exception in case of PSR17 discovery failure
  [DependencyInjection] Handle ServiceClosureArgument for callable in container linting
  fix processing chain adapter based cache pool
  [HttpKernel] release lock explicitly
  [Security] Prevent canceled remember-me cookie from being accepted
  [FrameworkBundle][TranslationUpdateCommand] Do not output positive feedback on stderr
  [Security\Guard] Fix missing typehints
  do not render preferred choices as selected

Author: nicolas-grekas

Kernel.php

@@ -475,7 +475,7 @@ public function write(string $content, array $metadata = null)
                             }
                         }
 
-                        public function __destruct()
+                        public function release()
                         {
                             flock($this->lock, LOCK_UN);
                             fclose($this->lock);
@@ -553,7 +553,7 @@ public function __destruct()
         }
 
         $this->dumpContainer($cache, $container, $class, $this->getContainerBaseClass());
-        unset($cache);
+        $cache->release();
         $this->container = require $cachePath;
         $this->container->set('kernel', $this);