Curing a zombie villager in a world with GameTest Framework enabled crashes the game

Steps to Reproduce:

1. Create a new world with the GameTest Framework experimental toggle enabled
2. Spawn a zombie villager
3. Cure the zombie villager (weakness potion + golden apple)

Observed Results:
The game crashes.

Expected Results:
The curing process starts.

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Original Description:
when trying to heal a zombie villager, after fed golden apple the game completely freezes and needs to be shut down and restarted.