Biome transitions generate without their corresponding biome

**Description of the Bug Encountered** Biome transitions generate without their corresponding biome (e. g. Stone biome transitions without any Stone biomes surrounding them). This has been tested in a 26.1.2 and a 26.2-Snapshot-5 instance, both having the same issue. Disabling the biome transitions or the biome mixin fixes this issue. **Steps To Reproduce** 1. Use the default Wilder Wild config 2. Create a new world with the seed `558267859729353282` and teleport to `/tp @a -1777 84 185` 3. See that there is a Stone biome transition that's completely surrounded by a Forest biome 4. Now close the game and disable either the biome transitions or the biome mixin in Wilder Wild's config 5. Start the game, generate a new world with the same seed and teleport to the same location 6. See that the Stone biome transition is now gone **Expected Behavior** Biome transitions should always connect to a corresponding biome. Maybe this is happening, because the biome transition also accounts for caves? **Screenshots** Default config <img width="2560" height="1392" alt="Image" src="https://github.com/user-attachments/assets/a3938fb7-6ea1-42f1-9ed2-627ab0d4b19c" /> Disabled biome transitions/biome mixin <img width="2560" height="1392" alt="Image" src="https://github.com/user-attachments/assets/41845efb-ac21-4d33-b1e7-75bdbb6f79c5" /> **Logs** https://mclo.gs/PiAscFP