[BUGFIX] Align docheader and pagetree toppanel correctly

Releases: master, 7.6
Resolves: #74324
Change-Id: I3432881a896accf94d5a0a101dbcbecbe6027320
Reviewed-on: https://review.typo3.org/47566


Reviewed-by: Sascha Egerer <sascha@sascha-egerer.de>
Tested-by: Sascha Egerer <sascha@sascha-egerer.de>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Frank Naegler <frank.naegler@typo3.org>
Tested-by: Frank Naegler <frank.naegler@typo3.org>