More batch (#1468)

* batch updates in client

* rearange updating logic

* utilety type

* guard undefinde in affectsLoaded

* fix: pause state not saved to restore point

apps/server/src/stores/EventStore.ts

@@ -35,6 +35,7 @@ export const eventStore = {
         for (const dataKey of changedKeys) {
           socket.sendAsJson({ type: `ontime-${dataKey}`, payload: store[dataKey] });
         }
+        socket.sendAsJson({ type: `ontime-flush` });
         isUpdatePending = null;
         changedKeys.clear();
       });