1.15 Dragon Hitbox Fix

Fixes the dragon hitboxes being rendered wrong in 1.15.x.

In these versions the position of the dragons hitbox was calculated wrong, causing it to render 2x as far from 0 0 0 as the dragons actual position. This mod fixes that with a simple mixin.

The mod works for versions 19w41a - 20w14infinite. This includes all 1.15.x releases.