[BUGFIX] Fix record preview

A wrong evaluation of the null coalesce
assignment (?? is evaluted and && later-on),
the if() condition was always true for
any previews of records with versioning
enabled.

The Backend API is used instead.

Resolves: #88356
Releases: master, 9.5
Change-Id: I89ba14bd99bbeb17637b64d99a8d6de265a6e7c4
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/60758


Tested-by: Benni Mack <benni@typo3.org>
Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: Benni Mack <benni@typo3.org>
Reviewed-by: Tymoteusz Motylewski <t.motylewski@gmail.com>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>