don't allow mappers to resolve discussions when their map is qualified
don't allow mappers to resolve discussions when their map is qualified

resolves https://github.com/ppy/osu-web/issues/2128
no idea if it works like that, but worth a try since we came to the conclusion that having this would be great after discussing with other qat
nekodex/osu-web,nanaya/osu-web,notbakaneko/osu-web,kj415j45/osu-web,notbakaneko/osu-web,ppy/osu-web,LiquidPL/osu-web,kj415j45/osu-web,nanaya/osu-web,omkelderman/osu-web,kj415j45/osu-web,nekodex/osu-web,LiquidPL/osu-web,omkelderman/osu-web,nanaya/osu-web,omkelderman/osu-web,ppy/osu-web,LiquidPL/osu-web,nekodex/osu-web,notbakaneko/osu-web,ppy/osu-web,nekodex/osu-web,ppy/osu-web,omkelderman/osu-web,notbakaneko/osu-web,ppy/osu-web,nanaya/osu-web,LiquidPL/osu-web,nekodex/osu-web,LiquidPL/osu-web,kj415j45/osu-web,notbakaneko/osu-web,nanaya/osu-web