Mod Menu — v12.0.0-beta.1 for 1.21.2-pre3

— Updated to 1.21.2-pre3
— Fix Mods screen being slow to open the first time
— Config screen errors no longer show until after a user has tried to open them
— Fix drag-n-drop not supporting Quilt mods
— Updated Polish translation
— Fixed issue with drag-n-drop toast having the same line displayed twice
— Updated Korean translations
— Fixed Belarusian translation
— Fixed issues with parent mods
— Improve compatibility with other mods’ mixins