[BUGFIX] Missing/Wrong copy buttons if deflangBinding is disabled

Fixes: #49712
Releases: 6.2, 6.1, 6.0
Change-Id: If3aebb786ae6b3f23964704d5f3c13ea7b0fd0af
Reviewed-on: https://review.typo3.org/22354
Reviewed-by: Georg Ringer
Tested-by: Georg Ringer