[!!!][TASK] Remove ext:backend ModuleLayout view helpers

Resolves: #96126
Related: #94209
Releases: master
Change-Id: If2edcfdbf6ab2e206c43c634fa58ccf75c75ab38
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/72343


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