[BUGFIX] Extbase tries to overlay pages_language_overlay records

Method doLanguageAndWorkspaceOverlay of
Extbase\Persistence\Generic\Storage\Typo3DbBackend should not attempt
to get a parent record if the overlays are in a separate table (most
probably pages_language_overlay) by checking whether
$GLOBALS['TCA'][$tableName]['ctrl']['transOrigPointerTable'] is set.

Resolves: #56855
Releases: 6.0, 6.1, 6.2
Change-Id: I2cb53bc4733ee626ca0ae92e5dd91073d88ecc9d
Reviewed-on: https://review.typo3.org/28362
Reviewed-by: Anja Leichsenring
Tested-by: Anja Leichsenring