Project members UI
What does this MR do?
New UI for project members that includes groups.
Screenshots (if relevant)
Project members
Group members
What are the relevant issue numbers?
Part of #19868 (moved)
Closes #21320 (closed)
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
New UI for project members that includes groups.
Part of #19868 (moved)
Closes #21320 (closed)