Warden doesn't take Thorns damage with sonic boom attack

Warden don't take a damage while his new attack with thorns enchantement.

How to reproduce:

1. Spawn a Warden
2. /data get entity [Warden]
3. You can see Health:500.0f
4. Get an armor with thorns enchantement and wait until Warden will attack you.
5. /data get entity [Warden]
6. You still can see Health:500.0f