chore: export some types (#8309)

src/calendar/index.ts

@@ -5,3 +5,5 @@ const Calendar = withInstall<typeof _Calendar>(_Calendar);
 
 export default Calendar;
 export { Calendar };
+export type { CalendarType } from './CalendarMonth';
+export type { CalendarDayItem, CalendarDayType } from './CalendarDay';