Fix air setting block updates

By: md_5 <git@md-5.net>

paper-server/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java

@@ -137,7 +137,9 @@ public class CraftBlock implements Block {
         BlockPosition position = new BlockPosition(x, y, z);
 
         // SPIGOT-611: need to do this to prevent glitchiness. Easier to handle this here (like /setblock) than to fix weirdness in tile entity cleanup
-        chunk.getHandle().getWorld().setTypeAndData(position, Blocks.AIR.getBlockData(), 0);
+        if (type != 0) {
+            chunk.getHandle().getWorld().setTypeAndData(position, Blocks.AIR.getBlockData(), 0);
+        }
 
         if (applyPhysics) {
             return chunk.getHandle().getWorld().setTypeAndData(position, blockData, 3);