The behavior: "minecraft:behavior.charge_held_item" doesn't affect bows, tridents, or any chargeable item at all, only crossbows.

How to replicate:

1. Spawn a pillager
2. Do /replaceitem entity @e [type=pillager] slot.weapon.mainhand 0 bow
3. Give them a target
4. the pillager will still attack but the bow is not animated