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

Tests/ErrorEnhancer/ClassNotFoundErrorEnhancerTest.php

@@ -30,6 +30,10 @@ public static function setUpBeforeClass(): void
             // get class loaders wrapped by DebugClassLoader
             if ($function[0] instanceof DebugClassLoader) {
                 $function = $function[0]->getClassLoader();
+
+                if (!\is_array($function)) {
+                    continue;
+                }
             }
 
             if ($function[0] instanceof ComposerClassLoader) {