fix: preserve recurrence exceptions when RSVP to recurring events (#234)

When an attendee accepts/rejects/tentative a recurring event with
exceptions, only update the PARTSTAT without removing exception events.

Add removeOverrides: false parameter to updateSeriesAsync call in
handleRSVP function to preserve all recurrence exceptions.

Fixes: Recurrence exceptions being deleted when accepting/rejecting
all events in a recurring series

* fix: update PARTSTAT on all VEVENTs when RSVP to recurring events

When an attendee accepts/rejects/tentative a recurring event with exceptions,
update PARTSTAT on ALL VEVENTs (master + exceptions) to reflect the correct
attendance status across the entire series.

Changes:
- Add updateSeriesPartstat() in EventApi.ts to update PARTSTAT on all VEVENTs
- Update handleRSVP() to use new function instead of updateSeriesAsync
- Preserve exception times while updating PARTSTAT consistently
- Update test to verify new function is called correctly

Fixes: Exception events not accepting when user chooses 'Accept all events'

src/components/Event/eventHandlers/eventHandlers.ts

@@ -8,7 +8,10 @@ import {
   deleteEventAsync,
 } from "../../../features/Calendars/CalendarSlice";
 import { Calendars } from "../../../features/Calendars/CalendarTypes";
-import { getEvent } from "../../../features/Events/EventApi";
+import {
+  getEvent,
+  updateSeriesPartstat,
+} from "../../../features/Events/EventApi";
 import { CalendarEvent } from "../../../features/Events/EventsTypes";
 import { userData } from "../../../features/User/userDataTypes";
 import { getCalendarRange } from "../../../utils/dateUtils";
@@ -33,20 +36,11 @@ export async function handleRSVP(
   if (typeOfAction === "solo") {
     dispatch(updateEventInstanceAsync({ cal: calendar, event: newEvent }));
   } else if (typeOfAction === "all") {
-    const master = await getEvent(newEvent, true);
     const calendarRange = getCalendarRange(new Date(event.start));
 
-    dispatch(
-      updateSeriesAsync({
-        cal: calendar,
-        event: {
-          ...master,
-          attendee: event.attendee?.map((a) =>
-            a.cal_address === user.userData.email ? { ...a, partstat: rsvp } : a
-          ),
-        },
-      })
-    );
+    // Update PARTSTAT on ALL VEVENTs (master + exceptions)
+    await updateSeriesPartstat(event, user.userData.email, rsvp);
+
     if (calendars) {
       await refreshCalendars(dispatch, calendars, calendarRange);
     }