Potential improvements to leashed status for Working "Horses"

[noobanidus]

As shown previously on Discord, there's an interesting interaction between Horse Power and Animania horses. While the Animania devs would prefer if you prevented their sleeping mobs from "working", I imagined a simpler solution would be to ensure that calls to "getLeashed()" (which prevent the "sleep" behaviour/animation/pose) are true when the animal is working.

Obviously, as the boolean value that this function returns is private, it would probably require an access transformer or some form of reflection to change at the necessary points.

Example:

Currently, I'm using horse.hasHome() && horse.world.getTileEntity(horse.getHomePosition()) != null to determine if a horse is attached to a Horse Power device. While this check is sufficient for me, being able to simply rely on getLeashed() would be much clearer in code.

Thanks so much for an amazing mod! I've been using it heavily in the mod pack I've been designing and love it greatly.