Horse, Mule, and Donkey tail stay stationary while moving

When the Horse, Mule, and Donkey still use their v1 model, their tail will raised up while moving, this no longer the case on newer model.

Steps to reproduce:

1. Enable any resource packs with "format_version": 1 (like the one attached in the report), this will causes the game to use v1 model

2. Join any world, then ride a Horse, Mule, or Donkey

3. Press forward and then look at their tail, notice that their tail are raised up while moving

4. Exit the world, disable the resource packs, and then join the world again

5. Press forward and then look at their tail, notice that their tail stay stationary

Expected results:
Horse, Mule, and Donkey tail are raised up, like in the old model.

Observed results:
Horse, Mule, and Donkey tail stay stationary.