Badlands mineshaft generation can extend to other biomes, causing jarring surface cuts

The Bug:

Badlands mineshaft generation can extend to other biomes, causing jarring surface cuts.

Badlands mineshaft generation is unique: it uses a different wood and cuts more towards the surface than other mineshafts. However, it can extend to other biomes such as plains, and it looks quite jarring.

Here is an example:

Seed: -3557984241231373185
Coordinates: /execute in minecraft:overworld run tp @s -109.25 77.90 136.41 4.05 58.05

Steps to Reproduce:

1. Generate a world with the seed provided above and teleport to the given coordinates.
2. Look closely at the badlands mineshaft generation.
3. Take note as to whether or not badlands mineshaft generation can extend to other biomes, causing jarring surface cuts.

Observed Behavior:

Badlands mineshaft generation can extend to other biomes, causing jarring surface cuts.

Expected Behavior:

Badlands mineshaft generation would not be able to extend to other biomes.