… short option (downace)This PR was squashed before being merged into the 2.8 branch (closes#28393).Discussion----------[Console] fixed corrupt error output for unknown multibyte short option| Q             | A| ------------- | ---| Branch?       | 2.8 <!-- see below -->| Bug fix?      | yes| New feature?  | no <!-- don't forget to update src/**/CHANGELOG.md files -->| BC breaks?    | no     <!-- seehttps://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 |#28320   <!-- #-prefixed issue number(s), if any -->| License       | MIT| Doc PR        | - <!-- required for new features -->[Console]Fixed#28320 by using mb_substr instead of index access<!--Write a short README entry for your feature/bugfix here (replace this comment block.)This will help people understand your PR and can be used as a start of the Doc PR.Additionally: - Bug fixes must be submitted against the lowest branch where they apply   (lowest branches are regularly merged to upper ones so they get the fixes too). - Features and deprecations must be submitted against the master branch.-->Commits-------0f86156 [Console] fixed corrupt error output for unknown multibyte short option