Refetch data on registration v2 update (thewca#9907)

* refetch data if moving someone to and from the waiting list

* always refetch on update

app/webpacker/components/RegistrationsV2/RegistrationAdministration/RegistrationAdministrationList.jsx

@@ -173,14 +173,12 @@ export default function RegistrationAdministrationList({ competitionInfo }) {
         'negative',
       ));
     },
-    onSuccess: (data) => {
-      const { updated_registrations: updatedRegistrations } = data;
-      const updated = registrations.map(
-        (r) => (updatedRegistrations[r.user_id]
-          ? { ...updatedRegistrations[r.user_id], payment: r.payment }
-          : r),
-      );
-      queryClient.setQueryData(['registrations-admin', competitionInfo.id], updated);
+    onSuccess: async () => {
+      // If multiple organizers approve people at the same time,
+      // or if registrations are still coming in while organizers approve them
+      // we want the data to be refreshed. Optimal solution would be subscribing to changes
+      // via graphql/websockets, but we aren't there yet
+      await refetch();
     },
   });