Bug description

If the villager doesn't have a workstation (has some custom trades) trade cycling makes him lose all trades.

Minecraft version

1.20.1

Mod version

1.20.1-1.0.15

Mod loader and version

Fabric Loader 0.16.10

Steps to reproduce

I don't think it's important what kind of custom villager it is, but whatever

1. I encountered this issue with special villagers from Dungeons and Taverns
2. Find villager with custom trade tables in a Tavern
3. Open trading screen and click cycle trades
4. Villager loses all trades and is now useless

Expected behavior

At least, trades should not change. It would be better if cycle button would not show up at all if the villager doesn't have a workstation.

Log files

Screenshots

No response