Akin to how Husks in water turn into Zombies, and Zombies in water turn into Drowned,
[ ] Frostbitten should thaw out back to regular Zombies after 30 seconds in a biome with a temperature value higher than 0.1/after being set on fire for more than 10 seconds.
[ ] Swampies should clean off into regular Zombies after 30 seconds underwater.
Akin to how Husks in water turn into Zombies, and Zombies in water turn into Drowned,