I am looking for a script that creates a layer of bedrock going from y=0 to y=-4 in all newly generated chunks, that works in minecraft 1.21.11. Could someone help me out? It basically just needs to fill in a 5 block thick layer of bedrock in each new chunk that gets generated. It can be kinda laggy but try to make it efficient if you can. Assume a world where no chunks have been generated yet. Thanks! :3