most countries only have a 12mile zone before its open "international" area. so a 100km no-go zone is not gonna happen

as for poland needing nato to swoop in.. poland should have its own defence.
russia/nato relations do not exist, russia is not in nato so russia does not need to listen to any nato orders. this would have to be a UN thing

obviously to legally protect itself (should a drone owner(russia) cry foul of a bad shoot/damage/declaration of war..) poland would need to have done some kind of investigation to declare good reason to shoot it down. EG it came within polish borders.. if poland said it was 100km away from poland, russia could call it a message from poland declaring war on russia.. which would be a bad case to initiate

again poland could if spotting a foreign drone within polish borders would have to surveil it and decide if its an actual viable threat, and then shoot it down. if not a threat or in international space or other things then poland can just watch and report and gather more evidence to strengthen viability for future incursions to be probable threats