Mule doesn't adjust facing direction when leashed to a happy ghast

Steps to Reproduce:

1. Leash a mule

2. Attach it to a happy ghast by sneaking

3. Wait for the happy ghast to move

Observed Results:
The mule keeps the same facing direction, with the leads twisting unnaturally while the happy ghast turns.

Expected Results:
The mule adjusts its facing direction to match the happy ghast, similar to other large entities such as horses and donkeys.

Screenshots/Videos attached: Yes

Notes: This can be fixed by adding the quad_dampened spring type to the leashable entity component when the mule is attached to a happy ghast.