[BUGFIX] Disable trigger buttons in database wizard

The trigger buttons of the "Analyze Database Structure" modal are now
searched in the correct DOM container and can now get disabled again.

Resolves: #90748
Releases: master
Change-Id: I8f4f1289e833f36113687a60838756330604baea
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/63695


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Frank Nägler <frank.naegler@typo3.org>
Tested-by: Susanne Moog <look@susi.dev>
Reviewed-by: Frank Nägler <frank.naegler@typo3.org>
Reviewed-by: Susanne Moog <look@susi.dev>