Setting a seed in datapack?

I'm realizing in 1.19 they removed the ability to set a seed for a dimension or whatever and it just goes off the world seed. Is there any way to circumvent this? I have my overworld pregenerated quite far out, so i'm not against even changing the seed of the overworld if there's some way to adjust that in the files (Changing it in server properties doesnt do anything). I'm trying to make a mining/hunting dimension  (or rather, i have and they work well) but i want to wipe them frequently and have them be different each time. I'm not against changing the seed manaulyl and not making it completely random, just not sure if there's a way to get around not being able to set a seed in 1.19+ (i'm in 1.20) thanks in advance