Merge branch '8.0' into 8.1

* 8.0:
  Fix merge
  [VarDumper] Wrong dumper output for Accept: aplication/json requests
  [HttpKernel] Reset router locale to default when finishing main request
  Only decrement pendingRequests when it's more than zero
  [Dotenv] Fix self-referencing variables with defaults and env key resolution during deferred expansion
  Improve Bulgarian translations in validators.bg.xlf
  [Cache] Fix ChainAdapter ignoring item expiry when propagating to earlier adapters
  [Form] Fix typed property initialization in ValidatorExtension
  [Messenger] Fix duplicate pending messages in Redis transport with batch handlers
  Fix deprecation notices for "@method" annotations when implementing interfaces directly

Resources/views/Profiler/toolbar_js.html.twig

@@ -249,7 +249,10 @@
                         }
                     }
 
-                    pendingRequests--;
+                    if (pendingRequests > 0) {
+                        pendingRequests--;
+                    }
+
                     var row = request.DOMNode;
                     /* Unpack the children from the row */
                     var profilerCell = row.children[1];