Merge branch '6.0' into 6.1

* 6.0:
  [Console] Fix `Helper::removeDecoration` hyperlink bug
  Guard scripts from being run in non-CLI contexts
  Guard scripts from being run in non-CLI contexts
  a readonly property must not be reported as being writable

Author: fabpot

Resources/bin/yaml-lint

@@ -10,6 +10,10 @@
  * file that was distributed with this source code.
  */
 
+if ('cli' !== \PHP_SAPI) {
+    throw new Exception('This script must be run from the command line.');
+}
+
 /**
  * Runs the Yaml lint command.
  *