Description of problem:

When multiple role assignments are selected and deleted, it only deletes 1. This is because it sends each role assignment deletion as a separate PATCH request, and the MulticlusterRoleAssignment data is not updated in between each PATCH.

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

How reproducible:

Steps to Reproduce:

1. Create multiple role assignments
2. Select them all and delete
3. You will see only 1 gets deleted
4. Check chrome dev tools network tab to see all PATCH commands; inspect the payload to see what is happening

Actual results:

Delete all role assignments only deletes 1.

Expected results:

Delete multiple selected role assignments should actually delete them all.

Additional info: