Zombies always kill villagers

When a villager is killed by a zombie on hard difficulty, the converted zombie villager dies immediately due to having zero health.

Reproduction:

• Spawn a zombie and a villager in a room on hard difficulty and let nature take its course.

Expected result:

• Villager is converted to a zombie villager at full health.

Observed result:

• Villager converts and you see a zombie villager fall over.