Some fixes

- Fix mixin apply error on NeoForge
- Only reload world renderer when actually in a world

neoforge/src/main/resources/cullleaves-neoforge.mixins.json

@@ -1,7 +1,6 @@
 {
   "required": true,
   "package": "eu.midnightdust.cullleaves.neoforge.mixin",
-  "plugin": "eu.midnightdust.cullleaves.CullLeavesMixinPlugin",
   "compatibilityLevel": "JAVA_17",
   "minVersion": "0.8",
   "client": [