Entities Render on Death Screen

Fixes MC-228056 by preventing entity removal packets from being registered on the client death screen.

Instead it stores the entities that were loaded on the client before removal into a client side storage. This storage will be cleared upon respawn. Otherwise, entities will be in a frozen state, but still visible due to MC-169113, which is a server side issue not covered in this mod.

TLDR, entities will be visible on the death screen again, just won't update.

This mod supports Fabric for versions 1.20.1 and higher, and supports NeoForge for versions 1.21.1 and higher. Its fully client sided and supports all servers. Report any issues to the github repository.