Mace fall damage multiplier does not apply to mobs

The bug

Mace do not working on mobs.

Steps to reproduce

1. Build a 5-7 blocks pillar
2. Summoning a piglin with mace. (Why I don't use zombie to test, because MC-184885)

3. /summon minecraft:piglin ~ ~ ~ {HandItems:[{Count:1,id:mace},{}]}

1. Surrounding self
2. Let the piglin attacking you.

You won't get more damage.