A fix to the poison status effect!

I always have and still do think the best way to make poison relevant is to have it stack, building intensity for each additional “layer” of poison, with an upper limit of layers to prevent the likes of Euryali from being completely OP. Additionally, having it be uncleansable once it hits the max layer would help boost the underpowered Nagas a bit more, giving them their own annoying niche in the meta.