Drowned that wield tridents don't adjust their aim for swimming/crawling players

Drowned that throw tridents do not aim lower to hit swimming or crawling players, meaning that they'll often miss if the player is in swimming mode or goes under a slab. 

To reproduce:

1. Use the following command to summon a drowned carrying a trident: 

   /summon minecraft:drowned ~ ~1 ~ {equipment: {mainhand: {count: 1, id: "minecraft:trident"}, head: {count: 1, id: "minecraft:netherite_helmet"}}}

1. Place a slab meant to get the player into crawling mode, then go into survival.

2. When enabling crawling mode, notice that the drowned will rarely hit you.