bug #30883 [Console] Fix stty not reset when aborting in QuestionHelp…

…er::autocomplete() (Simperfit)

This PR was merged into the 3.4 branch.

Discussion
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[Console] Fix stty not reset when aborting in QuestionHelper::autocomplete()

| Q             | A
| ------------- | ---
| Branch?       | 3.4
| Bug fix?      | yes
| New feature?  | no <!-- don't forget to update src/**/CHANGELOG.md files -->
| BC breaks?    | no     <!-- see https://symfony.com/bc -->
| Deprecations? | no <!-- don't forget to update UPGRADE-*.md and src/**/CHANGELOG.md files -->
| Tests pass?   | yes    <!-- please add some, will be required by reviewers -->
| Fixed tickets | #30861   <!-- #-prefixed issue number(s), if any -->
| License       | MIT
| Doc PR        | none

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Commits
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f54389b bugfix: the terminal state was wrong and not reseted

src/Symfony/Component/Console/Helper/QuestionHelper.php

@@ -260,6 +260,7 @@ private function autocomplete(OutputInterface $output, Question $question, $inpu
 
             // as opposed to fgets(), fread() returns an empty string when the stream content is empty, not false.
             if (false === $c || ('' === $ret && '' === $c && null === $question->getDefault())) {
+                shell_exec(sprintf('stty %s', $sttyMode));
                 throw new RuntimeException('Aborted.');
             } elseif ("\177" === $c) { // Backspace Character
                 if (0 === $numMatches && 0 !== $i) {