[TASK] Add tests for SiteBased translations in Extbase records

As part of using the SiteBased translation model instead of
the legacy TypoScript settings, another test suite is added
which mimics the exact same settings and results as in TypoScript
for Extbase.

Resolves: #88142
Releases: master, 9.5
Change-Id: Ieaa2e0d6cb510e6e00555e848020d89e8e1f5670
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/60461


Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>