groups.delete_permission fails if a group has >10 permissions

This is because it fetches the default 10 from the list and looks for those permissions to remove individually. If the permission being deleted isn't on the first page of results in that query, it skips.

Start at the groups.delete_permission entry point and inspect how it retrieves the group's permissions before removing one. Reproduce the case with more than 10 permissions, then verify that deleting a permission beyond the first page succeeds.

Written by the indexing model from the issue text.