Cured baby zombie villagers stay as jockey variant

The bug

Currently, curing a baby zombie villager jockey does not cause it to dismount, creating a villager chicken jockey. The villager can also grow up, and it functions exactly as a normal villager, however, it does not dismount the chicken. This is likely caused by the fix of MC-163767.

How to reproduce

1. Find a baby zombie villager jockey, or spawn one in via commands:

   /summon chicken ~ ~ ~ {Passengers:[{id:zombie_villager,IsBaby:1,ConversionTime:10}]}
   

2. Cure the baby zombie villager as you would a normal zombie villager
3. Wait until it is cured
4. Observe the fact the villager is still riding the chicken

Code analysis

Code analysis by [Mod] Avoma can be found in this comment.