Baby Piglin and Zombified Piglin model is not centered

The updated model for the baby Piglin and Zombified Piglin is not centered on the Z axis. This causes the shadow and collision not properly align with the legs, and the chestplate also gets offset as a consequence of the incorrect body pivot.

This can be fixed by adding 0.5 to all bones and cubes (except for the body pivot).

I have attached a model that fixes the issue.