[BUGFIX] Wait for invisible `#alert-container` before editing sys_note records

Resolves: #102459
Related: #102331
Releases: main, 12.4
Change-Id: Id0d21abf3142577a0a2486ee1c8c42a0907e6d46
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/81898


Tested-by: core-ci <typo3@b13.com>
Tested-by: Andreas Kienast <a.fernandez@scripting-base.de>
Reviewed-by: Andreas Kienast <a.fernandez@scripting-base.de>