[BUGFIX] Init permissions in context menu

The current user permissions were not initialized
for the context menu resulting in non-existing
permissions for editors (and no possibility to copy
a page).

Change-Id: I8fe747a1f19b4bea794b7fdbd676e7f366eea695
Resolves: #80019
Releases: master
Reviewed-on: https://review.typo3.org/51852


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Steffen Frese
Tested-by: Steffen Frese
Reviewed-by: Tymoteusz Motylewski <t.motylewski@gmail.com>
Tested-by: Tymoteusz Motylewski <t.motylewski@gmail.com>