Hide details for invited members in seats usage

What does this MR do and why?

It hides the details toggle icon for rows where the user membership type is group_invite or project_invite, since the details in these two cases would be empty.

Screenshots or screen recordings

before	after

How to set up and validate locally

Thanks to @amandarueda for providing the stepped details.

1. Create root group A
   1. Add 2 members
   2. Create a project
   3. Add a paid subscription to group A
2. Create (using the same user) unrelated root group B
   1. Add 2 members (must be different from members added to group A)
3. View group A's seat usage page - should display the 2 members you added to group A
4. Invite group B to group A's project
5. View group A's billing page - should list 4 billable members
6. View group A's seat usage page - should display the 2 members you added to group A and 2 members you added to group B
7. The members associated with group B should not have the details icon visible

MR acceptance checklist

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• I have evaluated the MR acceptance checklist for this MR.

Related to #334050 (closed)