Avoid unnecessary rehash in ChunkLevelManager and TicketDistanceLevelPropagator

[InitAuther97]

In ChunkLevelManager, ticket level updates are applied by removing the first entry from the update map. This introduces unnecessary shiftKey and rehash logics in our use case. We can avoid them all.

[PhantomG27249]

Hello, could you provide some benchmarks and compatibility testing along with the pr? Along with hardware information and how you tested?

[InitAuther97]

Can confirm good compatibility with VMP, Lithium and ScalableLux by running chunky and walking around in the game with no error.
Since my device has only 10 cores and is incapable to make the main thread a bottleneck, I run spark to check the time cost here during a pregen task (which lasts 10min). There is a slight improvement in the time spent, as shown by the figures below (before, after).


profile.zip