[!!!][TASK] Remove extbase feature toggles

Resolves: #101008
Related: #100963
Related: #100622
Releases: main
Change-Id: Ib7c9c4c812622b4792ce947d0c9e2205202b5801
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/79270


Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Stefan Bürk <stefan@buerk.tech>
Tested-by: Stefan Bürk <stefan@buerk.tech>
Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>