[BUGFIX] Fix suggest wizard item selection

When selecting an item in a suggest list, the first label is always
taken instead of the clicked one.

Resolves: #55835
Releases: 6.3, 6.2
Change-Id: I7590cb290ee19fd807260ef5767805a23ef088b0
Reviewed-on: https://review.typo3.org/31479
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters