Merge branch '3.3' into 3.4

* 3.3: (64 commits)
  Show exception is checked twice in ExceptionController of twig
  allow SSI fragments configuration in XML files
  Display a better error message when the toolbar cannot be displayed
  render hidden _method field in form_rest()
  Add Doctrine Cache to dev dependencies to fix failing unit tests.
  return fallback locales whenever possible
  Fix Predis client cluster with pipeline
  [Dotenv] Test load() with multiple paths
  [Console] Fix catching exception type in QuestionHelper
  Improved the exception page when there is no message
  [WebProfilerBundle] Eliminate line wrap on count columnt (routing)
  [Validator] replace hardcoded service id
  [Routing] Fix XmlFileLoader exception message
  [DI] Dedup tags when using instanceof/autoconfigure
  [Translation] Fix FileLoader::loadResource() php doc
  Sessions: configurable "use_strict_mode" option for NativeSessionStorage
  [FrameworkBundle] [Command] Clean bundle directory, fixes #23177
  fixed CS
  [WebProfilerBundle] Fix the icon for the Cache panel
  [WebServerBundle] Fix router script path and check existence
  ...

Author: xabbuh

DataCollectorTranslator.php

@@ -97,7 +97,7 @@ public function getCatalogue($locale = null)
      */
     public function getFallbackLocales()
     {
-        if ($this->translator instanceof Translator) {
+        if ($this->translator instanceof Translator || method_exists($this->translator, 'getFallbackLocales')) {
             return $this->translator->getFallbackLocales();
         }
 

Loader/FileLoader.php

@@ -54,7 +54,7 @@ public function load($resource, $locale, $domain = 'messages')
         return $catalogue;
     }
 
-    /*
+    /**
      * @param string $resource
      *
      * @return array

LoggingTranslator.php

@@ -96,7 +96,7 @@ public function getCatalogue($locale = null)
      */
     public function getFallbackLocales()
     {
-        if ($this->translator instanceof Translator) {
+        if ($this->translator instanceof Translator || method_exists($this->translator, 'getFallbackLocales')) {
             return $this->translator->getFallbackLocales();
         }