Skip Mail calendar sync for Meet rooms created by Ladill Events.

Events owns calendar entries for events-sourced rooms so virtual sessions
do not duplicate on the webmail calendar.

Co-authored-by: Cursor <cursoragent@cursor.com>

app/Services/Meet/CalendarService.php

@@ -20,7 +20,7 @@ class CalendarService
 
     public function syncRoomCreated(Room $room, User $host): void
     {
-        if (! $room->scheduled_at) {
+        if (! $room->scheduled_at || $room->isEventsSourced()) {
             return;
         }
 
@@ -39,7 +39,7 @@ class CalendarService
 
     public function syncRoomUpdated(Room $room, User $host): void
     {
-        if (! $room->scheduled_at) {
+        if (! $room->scheduled_at || $room->isEventsSourced()) {
             return;
         }
 
@@ -59,6 +59,10 @@ class CalendarService
 
     public function syncRoomCancelled(Room $room, User $host): void
     {
+        if ($room->isEventsSourced()) {
+            return;
+        }
+
         if ($mailbox = $this->resolveMailMailbox($host)) {
             if ($room->calendar_event_id) {
                 $this->mail->deleteEventForMailbox($mailbox, $room);