[BUGFIX] Prevent undefined key warnings in suggest wizard

Several undefined array key warnings prevented the
TCA suggestion wizard from showing results.
These have been fixed.

Resolves: #95537
Releases: master
Change-Id: I6a9019b977c62529f6263d9f37eed30bbb88ba4d
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/71503


Tested-by: core-ci <typo3@b13.com>
Tested-by: Nikita Hovratov <nikita.h@live.de>
Tested-by: Oliver Bartsch <bo@cedev.de>
Reviewed-by: Nikita Hovratov <nikita.h@live.de>
Reviewed-by: Oliver Bartsch <bo@cedev.de>