Drowned mob has no throwing animation

The bug

The Drowned mob has no throwing animation and his hands are just up.

How to reproduce

1. Run the following command in water:

   /summon minecraft:drowned ~ ~ ~ {HandItems:[{id:"minecraft:trident",Count:1b}]}

2. Set your game mode to Survival
3. Allow the drowned to attack you

Expected behavior

The drowned would use an animation for throwing the trident.

Observed behavior

The drowned does not use a throwing animation; instead, it simply holds its hands up.