[BUGFIX] Extra click menu options on second level not rendered

The merge extra_page_cm_options was not correct. The second level
is never rendered again. Fix this by moving it into the correct
method.

Resolves: #62458
Related: #55136
Releases: master
Change-Id: I5ce3c71997f89c28f506b1419986b023d2073218
Reviewed-on: http://review.typo3.org/33509
Reviewed-by: Stefan Neufeind <typo3.neufeind@speedpartner.de>
Tested-by: Stefan Neufeind <typo3.neufeind@speedpartner.de>