[MC-143674] The unemployed villager (profession:none) is missing the translation string.

This villager profession is supposed to exist for baby villagers (so they don't have a profession), but the translation string for this profession is missing, as such, making a command say baby villager names, makes them show up as entity.minecraft.villager.none, rather than "Unemployed Villager" or similar.

This is not ~~MC-140938~~, as that's about them appearing randomly when using /summon, and spawn eggs, this is purely about the name.

Steps to reproduce:

Grab a villager spawn egg
Spawn a villager
Use the spawn egg on the villager (to make a baby villager)
Run /execute as @e[type=villager] run say @s
Observe [entity.minecraft.villager.none] entity.minecraft.villager.none