Fix: Timezone-aware Date comparison for Calendar integration (#4742)

Co-authored-by: shamoon <4887959+shamoon@users.noreply.github.com>

src/widgets/calendar/event.jsx

@@ -39,4 +39,5 @@ export default function Event({ event, colorVariants, showDate = false, showTime
     </div>
   );
 }
-export const compareDateTimezone = (date, event) => date.startOf("day").ts === event.date.startOf("day").ts;
+export const compareDateTimezone = (date, event) =>
+  date.startOf("day").toISODate() === event.date.startOf("day").toISODate();