WORLDGUARD-4107 - Reported by TrollyLoki

Add a flag that prevents wandering traders and trader llamas from spawning naturally. It would not stop them from being spawned using a spawn egg or command.

Comment by wizjany

should mostly be doable just by turning off block-plugin-spawning in config and using /summon or w/e else

this is an extremely specific request and i don't feel the need to make a completely separate flag for it