Symfony version(s) affected: 3.4 and newer

Description
We have a disableStty method in QuestionHelper: https://github.com/symfony/console/blob/master/Helper/QuestionHelper.php#L93-L96
But, since 3.4 QuestionHelper doesn't check the state of this flag, it checks Terminal instead: https://github.com/symfony/console/blob/master/Helper/QuestionHelper.php#L112
Terminal doesn't provide a disableStty method: https://github.com/symfony/console/blob/master/Terminal.php

Possible Solution
Add disableStty to the Terminal class?