Structures no longer generate in old-type worlds

Affects versions 1.20.60+

Steps to reproduce:

1. Import and open the linked world: old world.mcworld
2. Travel to 177 -301

Observed results:
No village is present at the coordinates

Expected results:
A village should be present

Screenshots:
1st screenshot taken in 1.16.201, using plastic texture pack from marketplace
2nd screenshot taken in 1.20.51
3rd screenshot taken in 1.20.81
3rd screenshot: https://drive.google.com/file/d/1Jz8jWUanSjW1VpdFmpDzMk-DX-KdC8DU/view?usp=sharing