add a comment around expectations for the copyGroups function

controllers/services/auth/auth_controller_actions.go

@@ -49,6 +49,10 @@ func initialize(ctx context.Context, rr *odhtypes.ReconciliationRequest) error {
 	return nil
 }
 
+// We only really expect this to copy once, the fields in the dashboardConfig will be immutable
+// but there may be edge cases where the dashboardConfig is created or edited later.
+// This function can be removed entirely when the dashboard team deprecates
+// the fields in question.
 func copyGroups(ctx context.Context, rr *odhtypes.ReconciliationRequest) error {
 	ai, ok := rr.Instance.(*serviceApi.Auth)
 	if !ok {