Move to function static variable
Move to function static variable

Avoid breaking notification test which depends on going through class constants.

notbakaneko/osu-web,ppy/osu-web,ppy/osu-web,nanaya/osu-web,LiquidPL/osu-web,LiquidPL/osu-web,notbakaneko/osu-web,notbakaneko/osu-web,nanaya/osu-web,nanaya/osu-web,nanaya/osu-web,LiquidPL/osu-web,notbakaneko/osu-web,ppy/osu-web,LiquidPL/osu-web,notbakaneko/osu-web,LiquidPL/osu-web,nanaya/osu-web,ppy/osu-web,ppy/osu-web