Fix assignment of a user to a service when an obsolete service reached the limit

Pre-requisites:

• define quota for Studio service set to 3
• have 5 users attached to a ConnectClient
• have an obsolete Studio service with 3 users
• have a valid Studio service with 1 user

Steps to reproduce:

1. As the customer orgAdmin, navigate to the Account Management
2. Choose your organization
3. Navigate to the Services tab
4. it should display only 1 Studio service, the valid one, and the quota should show 1/3
5. Select the Studio service
6. Click on Manage members
7. select an unassigned user which does not belong to the obsolete Studio service
8. Click on Confirm
9. Observe that nothing happens (the popup is still visible)

If you open the Developer tools and look at the Response, it has an error

Can't assign more users: quota has been reached. Please unassign someone first and try again

Expected behavior:

The user is added to the Studio service, the popup is closed and the Services tab shows 2/3 for the Studio service