[BUGFIX] Copying workspace version record fails

Copying workspace version records fails in Doctrine DBAL exception due to
using computed properties directly in the database - which do not exist.
This misbehavior has been introduced in issue #79515 which switched to
use BackendUtility:workspaceOL() without further sanitization.

Resolves: #81747
Releases: master, 8.7
Change-Id: Iabc67f9a7375d4246289e50205aac6dc8c750259
Reviewed-on: https://review.typo3.org/53357


Reviewed-by: Markus Klein <markus.klein@typo3.org>
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Oliver Hader <oliver.hader@typo3.org>
Tested-by: Oliver Hader <oliver.hader@typo3.org>