Merge branch '4.3' into 4.4

* 4.3:
  [Cache] replace getNsSeparator by NS_SEPARATOR on AbstractTrait
  [Cache] fix versioning with SimpleCacheAdapter
  [Messenger] fix AMQP delay queue to be per exchange
  Fix expired lock not cleaned
  [HttpClient] throw DecodingExceptionInterface when toArray() fails because of content-type error
  [HttpFoundation] Fix SA/phpdoc JsonResponse
  [DI] Show the right class autowired when providing a non-existing class in constructor
  SimpleCacheAdapter fails to cache any item if a namespace is used
  validate composite constraints in all groups
  [Serializer] Handle true and false appropriately in CSV encoder
  [Messenger] improve logs
  [Messenger] fix delay delivery for non-fanout exchanges
  Parameterize Mailgun's region
  Fix binary operation `+`, `-` or `*` on string
  [VarDumper] fix dumping objects that implement __debugInfo()
  [HttpClient] Don't use CurlHttpClient on Windows when curl.cainfo is not set
  Add statement to fileLink to ignore href code when no fileLink.
  [Routing] fix absolute url generation when scheme is not known

Author: nicolas-grekas

Console/Descriptor/TextDescriptor.php

@@ -557,8 +557,11 @@ private function formatControllerLink($controller, string $anchorText): string
         }
 
         $fileLink = $this->fileLinkFormatter->format($r->getFileName(), $r->getStartLine());
+        if ($fileLink) {
+            return sprintf('<href=%s>%s</>', $fileLink, $anchorText);
+        }
 
-        return sprintf('<href=%s>%s</>', $fileLink, $anchorText);
+        return $anchorText;
     }
 
     private function formatCallable($callable): string