ignore ambiguities on MainWorld and caches

[atlv24]

Objective

• bring down the RenderApp ambiguity count by about ~1500

Solution

• ignore ambiguity on MainWorld in extract (this is fine, it doesnt/shouldnt matter what order we read MainWorld in, and mutating it in extract is cursed)
• caches and other things of the form of HashSet<Entity, Thing> don't care about write order

Testing

• this doesnt change behavior just ignores ambiguities that dont matter