[BE] Update billable_members/memberships endpoint to include invited project
Proposal
We need to update the GET /groups/:id/billable_members/:user_id/memberships
endpoint to include the invited project(s) of the user.
This will unblock the work in #351954 (closed).
Availability and Testing
- No new E2E tests or updates needed at this time
- Consider adding request specs for the
billable_members
endpoint to verify the new expected details are returned for members from invited groups
Edited by Alex Martin