Crops within savanna village farms can generate on top of invalid blocks

The Bug:

Crops within savanna village farms can generate on top of invalid blocks.

For example, crops can sometimes generate on top of water, grass blocks, dirt paths, etc...

Here is an example:

Seed: -326284816351374599
Coordinates: /execute in minecraft:overworld run tp @s 10094.79 99.00 1380.58 233.40 39.35

Steps to Reproduce:

1. Generate a world with the seed provided above and teleport to the given coordinates.
2. Look closely at the crops within the savanna village farm.
3. Take note as to whether or not crops within savanna village farms can generate on top of invalid blocks.

Observed Behavior:

Crops can generate on top of invalid blocks.

Expected Behavior:

Crops would not be able to generate on top of invalid blocks.