Hoglins have the same hitbox as a pig

The hitbox of Hoglins is the same as a pig's. This means they can fit through 1 block gaps and other small spaces they are not supposed to, and don't suffocate.

How to reproduce:
1. Make a area that is only 1 block tall.
2. Try to spawn a hoglin in it.
3. You will see the Hoglin can fit in to it.