Parity: Piglins and Piglin Brutes don't keep their weapons after being zombified

The piglins and piglin brutes don't keep their weapon when being converted into zombified piglins.

Step to Reproduce:
1. Spawn a piglin brute/piglin with a crossbow in the overworld.
2. Wait until it converts.

Observed Results:
The Piglin Brutes/Piglins don't keep their golden axe/crossbow, instead it gets replaced to golden sword after being zombified, like piglins with golden swords.

Expected Results:
The piglin brutes/piglins keep their golden axe/crossbow after being converted into zombified piglin.