Logic change for can remove in group_link

What does this MR do and why?

Solves #251137 (closed)

Currently If a group owner is linked to a project with access lower than maintainer there is no way group owner to unlink a project from the group which is a required feature as per comment here - #251137 (comment 621440208)

With this change a group owner can remove the from Project Members page

Screenshots or screen recordings

User here has an option to delete the owned group from project member list

We can see in the screenshot below the user is owner of GroupA