Merge branch '3.4' into 4.0

* 3.4:
  [Intl] Fixed the broken link
  Fix typo
  Fix typo
  Fixed issue #25985
  Don't show wanna-be-private services as public in debug:container
  [Routing] Fix trailing slash redirection for non-safe verbs
  [DI] Fix tracking of source class changes for lazy-proxies
  Proxy class names should be deterministic and independent of spl_object_hash() which is somewhat random
  [Debug] Fix bad registration of exception handler, leading to mem leak
  [Form] Fixed empty data on expanded ChoiceType and FileType
  collect extension information as late as possible

Author: Robin Chalas

Tests/Extension/FormExtensionBootstrap4LayoutTest.php

@@ -29,7 +29,7 @@ class FormExtensionBootstrap4LayoutTest extends AbstractBootstrap4LayoutTest
 {
     use RuntimeLoaderProvider;
     /**
-     * @var FormRenderer;
+     * @var FormRenderer
      */
     private $renderer;