Sculk catalyst triggers when a villager converts into zombie villager by a zombie

When testing the sculk catalyst with a villager converted into a zombie villager by a zombie, the catalyst triggers, despite that the villager didn't die from it. This is inconsistent with other zombified conversion mechanics which don't trigger the catalyst at all.

How to Reproduce

1. Set difficulty to Hard to make sure the villager gets converted to zombie villager 100%
2. Create a platform with sculk catalyst in the center
3. Spawn a zombie and a villager at night
4. Wait until it converts

Observed Result
The sculk catalyst gets triggered by the event.

Expected Result
The sculk catalyst doesn't get triggered by the conversion of the villager.