Update world leak patch to 1.18

Author: embeddedt

common/src/main/java/org/embeddedt/modernfix/common/mixin/bugfix/world_leaks/MinecraftMixin.java

@@ -32,7 +32,7 @@ private void clearLevelDataForLeaks(CallbackInfo ci) {
                 }
                 this.level.getChunkSource().lightEngine = new LevelLightEngine(this.level.getChunkSource(), false, false);
                 // clear BE list otherwise they will hold chunks
-                this.level.blockEntityList.clear();
+                this.level.blockEntityTickers.clear();
             } catch(RuntimeException e) {
                 ModernFix.LOGGER.error("Exception clearing level data", e);
             }

common/src/main/resources/modernfix.accesswidener

@@ -6,6 +6,8 @@ mutable field net/minecraft/client/multiplayer/ClientChunkCache lightEngine Lnet
 accessible class net/minecraft/client/multiplayer/ClientChunkCache$Storage
 accessible field net/minecraft/client/multiplayer/ClientChunkCache$Storage chunks Ljava/util/concurrent/atomic/AtomicReferenceArray;
 
+accessible field net/minecraft/world/level/Level blockEntityTickers Ljava/util/List;
+
 accessible class net/minecraft/client/renderer/RenderType$CompositeRenderType
 accessible method net/minecraft/nbt/CompoundTag <init> (Ljava/util/Map;)V