[BUGFIX] Fix page module styling in Languages view

Change in height of table header row for Languages view.

Resolves: #56714
Releases: 6.3, 6.2
Change-Id: Ic6bab8a99695798ecfc115209aec41e241870925
Reviewed-on: https://review.typo3.org/31498
Reviewed-by: Markus Klein
Tested-by: Markus Klein
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters