Old Horse Model

• Updated for the new baby system in EMF (this is prep work for 26.1) and -
• fixed horse tail being one pixel inside the horse (reported by @jmoss_8374)
• fixed donkey ears being incorrectly offset (reported by @jmoss_8374)
• fixed donkeys having the leg texture flipped (reported by @jmoss_8374)
• mostly fixed foal model (reported by @Aimee)

Known bug with mule / donkey foals is that the rear leg pivot points are set to the same as adults, from what i can tell this is a bug in the emf mod as it was working in older versions of the mod

Thanks to @jmoss_8374 and @Aimee for reporting the issues found in the discord