fix issue resulting from kenny's apatch addiction

patches/server/Fix-Chunk-Post-Processing-deadlock-risk.patch

@@ -37,14 +37,14 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
      private final com.destroystokyo.paper.util.misc.PooledLinkedHashSets<ServerPlayer> pooledLinkedPlayerHashSets = new com.destroystokyo.paper.util.misc.PooledLinkedHashSets<>();
  
 @@ -0,0 +0,0 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
-                 });
+                 return (LevelChunk) list.get(list.size() / 2);
              });
          }, (runnable) -> {
 -            this.mainThreadMailbox.tell(ChunkTaskPriorityQueueSorter.message(holder, runnable));
 +            this.mainThreadMailbox.tell(ChunkTaskPriorityQueueSorter.message(holder, () -> ChunkMap.this.chunkLoadConversionCallbackExecutor.execute(runnable))); // Paper - delay running Chunk post processing until outside of the sorter to prevent a deadlock scenario when post processing causes another chunk request.
-         });
-         return completablefuture1;
-     }
+         }).thenApplyAsync((either) -> {
+             return either.ifLeft((chunk) -> {
+                 chunk.postProcessGeneration();
 diff --git a/src/main/java/net/minecraft/server/level/ServerChunkCache.java b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
 index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
 --- a/src/main/java/net/minecraft/server/level/ServerChunkCache.java