A job records AddComponent<Dead> into an EndSimulation ECB. When can another system relia…

A job records AddComponent<Dead> into an EndSimulation ECB. When can another system reliably query that new component?

1. After that ECB system has played the command buffer back
2. As soon as AddComponent is recorded by any worker thread
3. As soon as the producing job is scheduled
4. Only after the World is destroyed and recreated