The changelog for 24w05a contains a typo: "body_armod_item" instead of "body_armor_item".
— Handling of Horses ArmorItem, Llamas DecorItem, and Wolf's armor has been changed to use body_armod_item and body_armor_drop_chance instead
https://www.minecraft.net/en-us/article/minecraft-snapshot-24w05a
Comments

This seems to be fixed.