* Fix containers that hold entities not on client
* Delete from ExpectedEntities when entity removed
* Fix ContainerSystem not registering on the server
* Move container state to entity system
Move client code to client
* Fix removal and clean up code
* Add test
* Add more checks to test
* Remove unneeded deletion event handler
When the child is deleted, if the entity does not exist on the client,
then HandleComponentState runs. If the entity does exist, then
HandleEntityInitialized would have run. Either way HandleEntityDeleted
is not needed.
* Renamed unexpected to removedExpected