EntityTypeHandle An object that represents the type information required to safely access Entity instances stored in a chunk.
Manually gets the runtime type information required to access the array of Entity objects in a chunk.
To make sure the entity type handle is up to date, call EntityTypeHandle.Update before you use this method.
It's best practice to use SystemAPI.GetEntityTypeHandle instead of this method because SystemAPI.GetEntityTypeHandle caches in OnCreate for you
and calls Update(ref SystemState) at the call-site.