Merge branch '4.4' into 5.0

* 4.4:
  [Validator] Fix auto-mapping constraints should not be validated
  [Debug] Updated the README to deprecate the component
  [Cache] fix memory leak when using PhpFilesAdapter
  [Yaml] Implement multiline string as scalar block for tagged values
  [HttpFoundation] Use `Cache-Control: must-revalidate` only if explicit lifetime has been given
  [FrameworkBundle] Use UserInterface to @return in getUser method
  [CI] Replace php7.4snapshot with php7.4 in Travis configuration
  [ExpressionLanguage][Node][BinaryNode] Process division by zero
  Fixing bad order of operations with null coalescing operator
  forward caught exception
  [Validator][ConstraintValidator] Stop passing unnecessary timezone argument to \DateTime
  add tags before processing them
  [FrameworkBundle][ContainerLintCommand] Reinitialize bundles when the container is reprepared
  [Process] change the syntax of portable prepared command lines
  [MonologBridge] Fix debug processor datetime type

Author: nicolas-grekas

Command/ContainerLintCommand.php

@@ -69,7 +69,11 @@ private function getContainerBuilder(): ContainerBuilder
         $kernel = $this->getApplication()->getKernel();
 
         if (!$kernel->isDebug() || !(new ConfigCache($kernel->getContainer()->getParameter('debug.container.dump'), true))->isFresh()) {
-            $buildContainer = \Closure::bind(function () { return $this->buildContainer(); }, $kernel, \get_class($kernel));
+            $buildContainer = \Closure::bind(function (): ContainerBuilder {
+                $this->initializeBundles();
+
+                return $this->buildContainer();
+            }, $kernel, \get_class($kernel));
             $container = $buildContainer();
         } else {
             (new XmlFileLoader($container = new ContainerBuilder($parameterBag = new EnvPlaceholderParameterBag()), new FileLocator()))->load($kernel->getContainer()->getParameter('debug.container.dump'));

Controller/AbstractController.php

@@ -351,7 +351,7 @@ protected function getDoctrine(): ManagerRegistry
     /**
      * Get a user from the Security Token Storage.
      *
-     * @return mixed
+     * @return UserInterface|object|null
      *
      * @throws \LogicException If SecurityBundle is not available
      *