Icy's Better Horses + Immersive Horse Riding Render Fix

fixes rendering bug in which horse patterns turn opaque instead of fading like the rest of the horse when looking downward with icy's better horses and immersive horse riding installed which causes black artifacts on horses with spots, socks, or feild patterns, this mod fixes them and makes them fade slowly when looking down just like the rest of the horse

without mod:

with mod:

open to backport requests