[DELEGATION] Edit attendance and events, delete event for someone (#553)

* [#523] added way to manage attendance for delegated calendars

* [DELEGATION] #523 & #524 changed eventURL calculation for delegated events to have the rigth one

* [#524] added drag and drop authorisation to delegated event

* [#524] added tests

* [#524] support for the permission access

* [#524] no edit when delegated event is not public

src/features/Events/EventUpdateModal.tsx

@@ -715,7 +715,7 @@ function EventUpdateModal({
         };
 
         // STEP 3: Persist new event to server
-        await putEvent(finalNewEvent, targetCalendar.ownerEmails?.[0]);
+        await putEvent(finalNewEvent, targetCalendar.owner?.emails?.[0]);
 
         // STEP 4: Update Redux store - Add new event first to prevent empty grid
         dispatch(updateEventLocal({ calId, event: finalNewEvent }));