Currently there is no API for handling consumable, death-protection, firework ad a few more components for 1.21.3.
Consumable is the main one as certain properties from 1.21.1's food-component has been moved here, and without being able to set it, breaks some item-behaviour

Sidenote: There are also typos in the javadocs for UsecooldownComponent, seemingly from being copy/pasted from food/jukebox-playable-components