When renaming a group document on a subwiki, access rights are not correct

This issue is the same as issue XWIKI-3548 which still reproduces on a subwiki, at least for groups (probably for users as well).

• Create a group A on a subwiki
• Give some rights on a page of the same subwiki to group A
• Rename group A to group B
• Check the rights on the page from step 2

Expected result:

• The rights given to group A are now given to group B

Actual result:

• The rights continue to be given to group A - this is only visible if looking at the rights of the page in object mode, in the administration of the page it will appear as no rights are given because the entity they're given to doesn't exist (anymore).