Merge branch '3.4' into 4.2

* 3.4:
  [Form] various minor fixes
  bugfix: the terminal state was wrong and not reseted
  [Console] Fix inconsistent result for choice questions in non-interactive mode
  Define null return type for Constraint::getDefaultOption()
  [HttpKernel] Fix DebugHandlersListener constructor docblock
  Skip Glob brace test when GLOB_BRACE is unavailable
  bumped Symfony version to 3.4.25
  updated VERSION for 3.4.24
  update CONTRIBUTORS for 3.4.24
  updated CHANGELOG for 3.4.24
  [EventDispatcher] cleanup

Author: fabpot

Tests/FinderTest.php

@@ -883,6 +883,10 @@ public function testInWithNonDirectoryGlob()
 
     public function testInWithGlobBrace()
     {
+        if (!\defined('GLOB_BRACE')) {
+            $this->markTestSkipped('Glob brace is not supported on this system.');
+        }
+
         $finder = $this->buildFinder();
         $finder->in([__DIR__.'/Fixtures/{A,copy/A}/B/C'])->getIterator();