When Biome Blend is set to 0, the side texture of grass blocks reverts to its old texture in Dark Forests

When Biome Blend is set to 0, the side texture of grass blocks in Dark Forests only displays grass_block_side.png without the overlay grass_block_side_overlay.png.

Steps to reproduce:

• Go to Video Settings and set Biome Blend to 0

• Locate a Dark Forest with /locate biome and teleport there

Expected result:

• The side texture of grass blocks in the Dark Forest has the grass overlay.

Actual result:

• The side texture of grass blocks in the Dark Forests doesn’t have the grass overlay.