Fix StartUpdate on root state not called.

Assets/Cryville/Crtr/Event/EventBus.cs

@@ -24,6 +24,7 @@ namespace Cryville.Crtr.Event {
 			Expand();
 			AttachBus();
 			RootState.Working = true;
+			RootState.StartUpdate();
 		}
 
 		public EventBus Clone(byte ct, float offsetTime = 0) {
@@ -35,6 +36,7 @@ namespace Cryville.Crtr.Event {
 			r.invalidatedStates = new HashSet<ContainerState>();
 			r.Time += offsetTime;
 			r.RootState = RootState.Clone(ct);
+			r.RootState.StartUpdate();
 			r.Expand();
 			r.AttachBus();
 			foreach (var s in r.states) r.invalidatedStates.Add(s.Value);