Merge branch '6.4' into 7.0

* 6.4:
  [DebugBundle] Remove obsolete VarDumper feature detection
  Remove obsolete DBAL 2 compat code
  Fix for TraceableAuthenticator debug when no Auth
  [TwigBridge] Remove obsolete Workflow feature detection
  [Console] Remove Process::fromShellCommandline() detection
  [TwigBridge] Change return type of Symfony\Bridge\Twig\AppVariable::getSession()
  [mailer] reset $code variable each iteration for prevent wrong codes to be used
  bug [mailer] fix EsmtpTransport variable $code definition
  UrlHelper: minor code style fix
  [Serializer] Looking for DiscriminatorMap on interfaces when the current object also extends from a class
  [DoctrineBridge][Security] Rename loadUserByUsername tests to loadUserByIdentifier

Author: fabpot

DependencyInjection/DebugExtension.php

@@ -38,14 +38,10 @@ public function load(array $configs, ContainerBuilder $container): void
         $container->getDefinition('var_dumper.cloner')
             ->addMethodCall('setMaxItems', [$config['max_items']])
             ->addMethodCall('setMinDepth', [$config['min_depth']])
-            ->addMethodCall('setMaxString', [$config['max_string_length']]);
+            ->addMethodCall('setMaxString', [$config['max_string_length']])
+            ->addMethodCall('addCasters', [ReflectionCaster::UNSET_CLOSURE_FILE_INFO]);
 
-        if (method_exists(ReflectionCaster::class, 'unsetClosureFileInfo')) {
-            $container->getDefinition('var_dumper.cloner')
-                ->addMethodCall('addCasters', [ReflectionCaster::UNSET_CLOSURE_FILE_INFO]);
-        }
-
-        if (method_exists(HtmlDumper::class, 'setTheme') && 'dark' !== $config['theme']) {
+        if ('dark' !== $config['theme']) {
             $container->getDefinition('var_dumper.html_dumper')
                 ->addMethodCall('setTheme', [$config['theme']]);
         }