Fix: ensure unique keys in WeekCalendar FlatList to prevent React war… (#2671)

* Fix: ensure unique keys in WeekCalendar FlatList to prevent React warnings

* Fix: ensure unique keys in WeekCalendar FlatList to prevent React warnings

Author: 5starkarma

src/expandableCalendar/WeekCalendar/index.tsx

@@ -133,7 +133,7 @@ const WeekCalendar = (props: WeekCalendarProps) => {
     );
   },[firstDay, _onDayPress, context, date, markedDates]);
 
-  const keyExtractor = useCallback((item) => item, []);
+  const keyExtractor = useCallback((item, index) => `${item}-${index}`, []);
 
   const renderWeekDaysNames = useMemo(() => {
     return (