Description of problem:

In some situations, when creating role assignments, if you select multiple subjects, it will only create one role assignment. This is because the PATCH requests sent by frontend are only for a single user (the last user in the list alphabetically)

Version-Release number of selected component (if applicable):

How reproducible:

Every time

Steps to Reproduce:

1. Delete all existing MulticlusterRoleAssignments
2. Create 9 role assignments at once in role assignment creation modal from any role context (select all 9 users at once)
3. Should complete successfully and show 9 role assignments.
4. Go to a different role view and create 9 role assignments at once in role assignment creation modal (select all 9 users at once)
5. Should only create 1 role assignment
6. View chrome network tab while doing it to see that all PATCH requests target the same user, which is not correct

Actual results:

Creates 1 role assignment

Expected results:

Should create 9 role assignments because we selected 9 users.

Additional info: