[TASK] Visual tweak of "SelectMultipleSideBySideElement"

The position of the buttons aside the wizard are not correct.

Releases: master, 8.7
Resolves: #83072

Change-Id: Ib60a4015b6a51997ee56381ec63fea79605b16c1
Reviewed-on: https://review.typo3.org/54730


Tested-by: TYPO3com <no-reply@typo3.com>
Tested-by: Riccardo De Contardi <erredeco@gmail.com>
Reviewed-by: Alexander Opitz <opitz.alexander@googlemail.com>
Tested-by: Alexander Opitz <opitz.alexander@googlemail.com>
Reviewed-by: Susanne Moog <susanne.moog@typo3.org>
Tested-by: Susanne Moog <susanne.moog@typo3.org>