[FOLLOWUP][BUGFIX] Use Fluid standalone abstract classes

Resolves: #82414
Releases: master
Change-Id: I375bfd92e0b7eb58aa68f5a50e18b854d8fc6bdb
Reviewed-on: https://review.typo3.org/54946


Reviewed-by: Andreas Fernandez <typo3@scripting-base.de>
Tested-by: Andreas Fernandez <typo3@scripting-base.de>
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: Benni Mack <benni@typo3.org>