[BUGFIX] Fix missing new record button with enabled useCombination

Also add it if a record selector is shown.

Resolves: #60370
Related: #57488
Releases: master, 6.2
Change-Id: If4f34521310dc3f479d6c97cada082db91f668c3
Reviewed-on: http://review.typo3.org/33289
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>