Iron Golem cannot attack mobs on a boat or minecart.

Steps to Reproduce:

1. Summon a zombie on a boat/minecart.
2. Summon an iron golem beside it.

Observed Results: Iron golem cannot attack it. Instead, it keeps spinning on a boat or keeps pushing the minecart.

Expected Results: Iron golem can attack mobs on a boat or minecart like Java Edition.