The right and left wings of an allay cannot be independently retextured

(This issue first appeared in 22w13a when allays were added)
The right and left wings of an allay cannot be independently retextured from one another, making them always look the same, limiting the player's resource pack creativity.

Steps to Reproduce:

1. Download and apply the following resource pack:
   allay_wing_same.zip
2. Spawn an allay

Observed Behavior:

Both wings will look the same (red squares) with the pack enabled.

Expected Result:

Because only (what seems like) one wing's texture was changed on the UV map, only one wing would be changed.

Screenshots/Videos: