feat: Add shortWeekDays and shortMonths to it_IT.ts (#916)

* feat: Add shortWeekDays and shortMonths to it_IT.ts

close: #898

* fix: type error in useInputProps getProp function

Author: liamli-0822

src/PickerInput/Selector/hooks/useInputProps.ts

@@ -123,7 +123,7 @@ export default function useInputProps<DateType extends object = any>(
   // ======================== Input =========================
   const getInputProps = (index?: number): InputProps => {
     function getProp<T>(propValue: T | T[]): T {
-      return index !== undefined ? propValue[index] : propValue;
+      return index !== undefined ? propValue[index] : (propValue as T);
     }
 
     const pickedAttrs = pickAttrs(props, { aria: true, data: true });

src/locale/it_IT.ts

@@ -30,6 +30,8 @@ const locale: Locale = {
   nextDecade: 'Prossimo decennio',
   previousCentury: 'Secolo precedente',
   nextCentury: 'Prossimo secolo',
+  shortWeekDays: ['Dom', 'Lun', 'Mar', 'Mer', 'Gio', 'Ven', 'Sab'],
+  shortMonths: ['Gen', 'Feb', 'Mar', 'Apr', 'Mag', 'Giu', 'Lug', 'Ago', 'Set', 'Ott', 'Nov', 'Dic'],
 };
 
 export default locale;