SPIGOT-5953, SPIGOT-5914: Use LinkedHashMap to keep captured block states in order

nms-patches/World.patch

@@ -32,7 +32,7 @@
 +
 +    public boolean captureBlockStates = false;
 +    public boolean captureTreeGeneration = false;
-+    public Map<BlockPosition, CapturedBlockState> capturedBlockStates = new HashMap<>();
++    public Map<BlockPosition, CapturedBlockState> capturedBlockStates = new java.util.LinkedHashMap<>();
 +    public Map<BlockPosition, TileEntity> capturedTileEntities = new HashMap<>();
 +    public List<EntityItem> captureDrops;
 +    public long ticksPerAnimalSpawns;