Merge branch '2.8' into 3.4

* 2.8:
  [DomCrawler] Fix ChoiceFormField::select() PHPDoc
  [HttpFoundation] add tests for FlashBagInterface::setAll()
  Check for Hyper terminal on all operating systems.
  Prevent toolbar links color override by css

Author: nicolas-grekas

DeprecationErrorHandler.php

@@ -311,13 +311,16 @@ private static function hasColorSupport()
             return false;
         }
 
+        if ('Hyper' === getenv('TERM_PROGRAM')) {
+            return true;
+        }
+
         if (DIRECTORY_SEPARATOR === '\\') {
             return (function_exists('sapi_windows_vt100_support')
                 && sapi_windows_vt100_support(STDOUT))
                 || false !== getenv('ANSICON')
                 || 'ON' === getenv('ConEmuANSI')
-                || 'xterm' === getenv('TERM')
-                || 'Hyper' === getenv('TERM_PROGRAM');
+                || 'xterm' === getenv('TERM');
         }
 
         if (function_exists('stream_isatty')) {