This fixes some visual errors of the chosen component,
when used inside a bootstrap input-group. This was due
to bootstrap's change to flex-form.

Resolves: #95492
Releases: master
Change-Id: Ib19e049d6afa8b2052d1739d902f9b65849bb354
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/71462


Tested-by: core-ci <typo3@b13.com>
Tested-by: Nikita Hovratov <nikita.h@live.de>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Nikita Hovratov <nikita.h@live.de>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>