fix: remove users only if exists
This MR removes users from dataset ACLs or subproject ACLs only if the user exists. Previously, the code-behind tried removing the user from ever group in the ACLs which was sub-optimal.
This MR removes users from dataset ACLs or subproject ACLs only if the user exists. Previously, the code-behind tried removing the user from ever group in the ACLs which was sub-optimal.