Wet wolves become nearly black in dark areas

The bug

Wet wolves turn darker (see MC-4618). However, when there is no light nearby (e.g. in caves or the bottom of the ocean) wet wolves become nearly black. This appears to be unintended.

How to reproduce

1. Create a superflat world with the preset "Water World"
2. Go to the ground of the water
3. Give yourself night vision and water breathing

   /effect give @s night_vision 10000 0 true
   

   /effect give @s water_breathing 10000 0 true
   

4. Spawn a wolf
   → The wolf is nearly black