handling sync for calendar invite

src/Bundle/ChillCalendarBundle/RemoteCalendar/Connector/MSGraph/RemoteEventConverter.php

@@ -112,6 +112,7 @@ class RemoteEventConverter
                         ['calendar' => $calendar]
                     ),
                 ],
+                'responseRequested' => true,
             ],
             $this->calendarToEventAttendeesOnly($calendar)
         );