Mobs that cannot naturally spawn with Spears don't use the charge attack

Giving spears to mobs that are not specifically programmed to use them, results in them not knowing how to charge attack. This is primarily harmful to creators who wish to utilize the Spear on other mobs, such as Skeletons and Illagers.

Steps to reproduce the issue

Summon a monster that is not a Zombie, Husk, Drowned(?), Piglin, or Zombified Piglin, with a spear, and see that it does not use the charged attack.
This even includes the upcoming Frostbite, which is an inconsistency with other zombies.

Expected result

All mobs with the ability to use weapons should use Spears the same way.

However, I would personally suggest that mobs attacking normally with Spears should not be removed, instead jab attacks being the normal mode of attack when unmounted, and only charge attack when mounted, regardless of mount. (horse, camel, chicken, spider, ravager, etc.)