When I built the mending farm in survival mode before moving villagers, villager professions can automatically change from one trade to other trade in blocks for a job. We need to fix for this ASAP.

Steps to Reproduce:

1. Spawn the Villager.

2. Set the bed.

3. Set the different blocks for a job.

Observed results: Villager profession changes are incorrect.

Expected results: Villager profession changes should be only correct.

Video: https://drive.google.com/file/d/1lWMqTpvOcKt32dEpKM8TIs2lmMLDMUvx/view?usp=drivesdk