1.15 Dragon Hitbox Fix

This modification fixes the issue of incorrectly displayed dragon hitboxes in Minecraft versions 1.15.x, where the hitbox position was miscalculated, causing the visual attack area to appear at double the distance from coordinates [0, 0, 0] compared to the dragon's actual position. The mod implements the fix through a simple mixin and is compatible with releases 19w41a — 20w14infinite, including all updates in the 1.15.x line.