[!!!][TASK] Remove extbase SignalSlot Dispatcher

Resolves: #96204
Related: #90625
Related: #92996
Releases: main
Change-Id: If76ac793f46bedba70fe325d1329d73cbd6a09fa
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/72464


Tested-by: core-ci <typo3@b13.com>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Benni Mack <benni@typo3.org>