Baby zombie variant arms disconnect from their body when attacking

The arms on zombie variants move fairly significantly away from their body during the attacking animation.

Steps to Reproduce:

1. Spawn a zombie type (husk, drowned, or zombie)

2. Let it attack melee you

Expected Result:

The zombie's arms would stay attached to its body.

Observed Behavior:

The zombies arms detach from their body entirely, creating a strange animation.

Screenshots/Videos: