Merge branch '2.7' into 2.8

* 2.7:
  [Routing] Add missing options in docblock
  [VarDumper] Fix dumping continuations
  [HttpFoundation] fixed Request::getContent() reusage bug
  [Form] Skip CSRF validation on form when POST max size is exceeded
  Enhance the phpDoc return types so IDEs can handle the configuration tree.
  fixes
  Remove 3.0 from branch suggestions for fixes in PR template
  [Process] Strengthen Windows pipe files opening (again...)
  Fix #19531 [Form] DateType fails parsing when midnight is not a valid time

Author: fabpot

DataCollector/DumpDataCollector.php

@@ -211,8 +211,7 @@ public function getDumps($format, $maxDepthLimit = -1, $maxItemsPerDepth = -1)
                 // getLimitedClone is @deprecated, to be removed in 3.0
                 $dumper->dump($dump['data']->getLimitedClone($maxDepthLimit, $maxItemsPerDepth));
             }
-            rewind($data);
-            $dump['data'] = stream_get_contents($data);
+            $dump['data'] = stream_get_contents($data, -1, 0);
             ftruncate($data, 0);
             rewind($data);
             $dumps[] = $dump;