[BUGFIX] Avoid live ID processing if EXT:version not loaded

DataHandler does not need to force "live ID" processing to
be enabled on RelationHandler when EXT:version is not loaded.

Avoiding this saves some semi-expensive operations inside
the RelationHandler class.

Resolves: #78998
Releases: master
Change-Id: If53cdd73db15352d6f4854a5aef4b407836cb6ce
Reviewed-on: https://review.typo3.org/50970


Reviewed-by: Thomas Hohn <thomas@hohn.dk>
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Claus Due <claus@phpmind.net>
Tested-by: Thomas Hohn <thomas@hohn.dk>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Oliver Hader <oliver.hader@typo3.org>
Tested-by: Oliver Hader <oliver.hader@typo3.org>