Snow golems are not damaged by splash or lingering water bottles

Summary:
Snow golems do not take damage from splash or lingering water bottles.

Steps to Reproduce:

1. Spawn a snow golem
2. Throw a splash or lingering water bottle at it

Observed Results:
The snow golem takes no damage.

Expected Results:
The snow golem should take damage.

Video:
Minecraft 2021-01-06 11-58-54.mp4