Gold swords dropped by piglins and zombified piglins all have the same durability

Summary:
All gold swords dropped by piglin and zombified piglins have the same durability and I'm assuming that's not supposed to be the case.

Steps to Reproduce:

1. Spawn several piglins and zombified piglins
2. Kill them and pick up their swords
3. Look at the durability of the swords

Observed Results:
They all have the same durability.

Expected Results:
Durability should be random.