[!!!][TASK] Deprecate cache FrontendInterface->getByTag

See #81460 for a detailed reasoning behind the change.

The patch declares the getByTags method as deprecated
and removes the only usage that existed in TYPO3.

Resolves: #81460
Related: #81432
Releases: master
Change-Id: I9647563246d96228cb906b7d9008b2cec564d3ae
Reviewed-on: https://review.typo3.org/53091


Reviewed-by: Oliver Hader <oliver.hader@typo3.org>
Tested-by: Oliver Hader <oliver.hader@typo3.org>
Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: Benni Mack <benni@typo3.org>
Tested-by: TYPO3com <no-reply@typo3.com>