Taking attack damage with thorns enchanted armor plays equipping sound

^{Update by [Mod] LateLag}
Steps to Reproduce:

1. Enchant any piece of armor with thorns;
2. Get attacked by another mob.

Observed Results:
The armor equipping sound plays.

Expected Results:
The armor doesn't play the equipping sound at all.

Screenshots/Videos attached: Yes

Notes The thorns sound plays normally when the attacker takes damage, but it's obscured by the armor equipping.