Workaround for some hacky environments that mess up things

2 people had issues where some plugin is doing some reallly insane NMS hackery
that created invalid worlds, which caused some errors...

Really don't understand what in the world they did, but putting in a dumb guard that
shouldn't even be necessary to just not send the sound effect rather than erroring.

Spigot-Server-Patches/Anti-Xray.patch

@@ -1418,8 +1418,8 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
          this.paperConfig = new com.destroystokyo.paper.PaperWorldConfig(worlddata.getName(), this.spigotConfig); // Paper
 +        this.chunkPacketBlockController = this.paperConfig.antiXray ? new ChunkPacketBlockControllerAntiXray(this.paperConfig) : ChunkPacketBlockController.NO_OPERATION_INSTANCE; // Paper - Anti-Xray
          this.generator = gen;
+         dimensionmanager.world = (WorldServer) this; // Paper
          this.world = new CraftWorld((WorldServer) this, gen, env);
-         this.ticksPerAnimalSpawns = this.getServer().getTicksPerAnimalSpawns(); // CraftBukkit
 @@ -0,0 +0,0 @@ public abstract class World implements GeneratorAccess, AutoCloseable {
              // CraftBukkit end