Merge branch '4.4' into 5.0

* 4.4:
  Fixed #35084
  Add missing use statement
  [HttpClient] fix scheduling pending NativeResponse
  do not overwrite variable value
  [Profiler] wording
  Use spaces correctly to display options in DebugCommand
  X-Accel Nginx URL updated
  ticket-30197 [Validator] Add the missing translations for the Chinese (Taiwan) ("zh_TW") locale
  Fixed test added in #35022
  Use locale_parse for computing fallback locales
  [Console] Fix filtering out identical alternatives when there is a command loader
  add note about HTTP status code change
  Migrate server:log command away from WebServerBundle
  [DependencyInjection][CheckTypeDeclarationsPass] Handle \Closure for callable
  [Security] Fix missing defaults for auto-migrating encoders
  bumped Symfony version to 4.4.3
  updated VERSION for 4.4.2
  updated CHANGELOG for 4.4.2

Author: nicolas-grekas

BinaryFileResponse.php

@@ -214,7 +214,7 @@ public function prepare(Request $request)
             }
             if ('x-accel-redirect' === strtolower($type)) {
                 // Do X-Accel-Mapping substitutions.
-                // @link http://wiki.nginx.org/X-accel#X-Accel-Redirect
+                // @link https://www.nginx.com/resources/wiki/start/topics/examples/x-accel/#x-accel-redirect
                 $parts = HeaderUtils::split($request->headers->get('X-Accel-Mapping', ''), ',=');
                 foreach ($parts as $part) {
                     list($pathPrefix, $location) = $part;