fix: there is no need to synchronise chunk sending to the chunk GET instance (#2463)

worldedit-bukkit/adapters/adapter-1_17_1/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_17_R1_2/PaperweightGetBlocks.java

@@ -98,6 +98,7 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
     private final int maxHeight;
     private final int minSectionPosition;
     private final int maxSectionPosition;
+    private final Object sendLock = new Object();
     private LevelChunkSection[] sections;
     private LevelChunk levelChunk;
     private DataLayer[] blockLight;
@@ -841,8 +842,10 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
     }
 
     @Override
-    public synchronized void send(int mask, boolean lighting) {
-        PaperweightPlatformAdapter.sendChunk(serverLevel, chunkX, chunkZ, lighting);
+    public void send(int mask, boolean lighting) {
+        synchronized (sendLock) {
+            PaperweightPlatformAdapter.sendChunk(serverLevel, chunkX, chunkZ, lighting);
+        }
     }
 
     /**

worldedit-bukkit/adapters/adapter-1_18_2/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_18_R2/PaperweightGetBlocks.java

@@ -104,6 +104,7 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
     private final int maxSectionPosition;
     private final Registry<Biome> biomeRegistry;
     private final IdMap<Holder<Biome>> biomeHolderIdMap;
+    private final Object sendLock = new Object();
     private LevelChunkSection[] sections;
     private LevelChunk levelChunk;
     private DataLayer[] blockLight;
@@ -892,8 +893,10 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
     }
 
     @Override
-    public synchronized void send(int mask, boolean lighting) {
-        PaperweightPlatformAdapter.sendChunk(serverLevel, chunkX, chunkZ, lighting);
+    public void send(int mask, boolean lighting) {
+        synchronized (sendLock) {
+            PaperweightPlatformAdapter.sendChunk(serverLevel, chunkX, chunkZ, lighting);
+        }
     }
 
     /**

worldedit-bukkit/adapters/adapter-1_19_4/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_19_R3/PaperweightGetBlocks.java

@@ -104,6 +104,7 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
     private final int maxSectionPosition;
     private final Registry<Biome> biomeRegistry;
     private final IdMap<Holder<Biome>> biomeHolderIdMap;
+    private final Object sendLock = new Object();
     private LevelChunkSection[] sections;
     private LevelChunk levelChunk;
     private DataLayer[] blockLight;
@@ -892,8 +893,10 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
     }
 
     @Override
-    public synchronized void send(int mask, boolean lighting) {
-        PaperweightPlatformAdapter.sendChunk(serverLevel, chunkX, chunkZ, lighting);
+    public void send(int mask, boolean lighting) {
+        synchronized (sendLock) {
+            PaperweightPlatformAdapter.sendChunk(serverLevel, chunkX, chunkZ, lighting);
+        }
     }
 
     /**

worldedit-bukkit/adapters/adapter-1_20/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R1/PaperweightGetBlocks.java

@@ -104,6 +104,7 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
     private final int maxSectionPosition;
     private final Registry<Biome> biomeRegistry;
     private final IdMap<Holder<Biome>> biomeHolderIdMap;
+    private final Object sendLock = new Object();
     private LevelChunkSection[] sections;
     private LevelChunk levelChunk;
     private DataLayer[] blockLight;
@@ -890,8 +891,10 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
     }
 
     @Override
-    public synchronized void send(int mask, boolean lighting) {
-        PaperweightPlatformAdapter.sendChunk(serverLevel, chunkX, chunkZ, lighting);
+    public void send(int mask, boolean lighting) {
+        synchronized (sendLock) {
+            PaperweightPlatformAdapter.sendChunk(serverLevel, chunkX, chunkZ, lighting);
+        }
     }
 
     /**

worldedit-bukkit/adapters/adapter-1_20_2/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R2/PaperweightGetBlocks.java

@@ -83,6 +83,7 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
     private final int maxSectionPosition;
     private final Registry<Biome> biomeRegistry;
     private final IdMap<Holder<Biome>> biomeHolderIdMap;
+    private final Object sendLock = new Object();
     private LevelChunkSection[] sections;
     private LevelChunk levelChunk;
     private DataLayer[] blockLight;
@@ -877,8 +878,10 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
     }
 
     @Override
-    public synchronized void send(int mask, boolean lighting) {
-        PaperweightPlatformAdapter.sendChunk(serverLevel, chunkX, chunkZ, lighting);
+    public void send(int mask, boolean lighting) {
+        synchronized (sendLock) {
+            PaperweightPlatformAdapter.sendChunk(serverLevel, chunkX, chunkZ, lighting);
+        }
     }
 
     /**