[Experimental] Microbiomes generation is broken and generates too often

Microbiomes in Bedrock Beta are broken and generate way too often.

For example, plains microbiomes located in a desert may spawn without and grass and with only sand, a savannah biome could spawn with incorrect leaf and grass tint, and I have also noticed extreme hills biomes without proper hills to match them. Microbiomes also spawn with great frequency, which can lead to 3 microbiomes being in one chunk all connected. It may also be noted that rare biomes such as Mesa and Bamboo Forest spawn at a great frequency with microbiomes.

In the pictures, you will observe a plains village spawned on only sand, and a mixture of extreme hills, mesa, and savanna biome.