Fix Ladill Mail calendar sync mailbox resolution and updates.

Use the connected mail calendar mailbox when set, skip API calls when
MAIL_API_KEY_MEET is unset, and call syncRoomUpdated on room edits.

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

app/Services/Meet/RoomService.php

@@ -94,7 +94,7 @@ class RoomService
         AuditLogger::record($room->owner_ref, 'room.updated', $room->organization_id, $room->host_user_ref, Room::class, $room->id);
 
         if ($host && $room->scheduled_at) {
-            app(CalendarService::class)->syncRoomCreated($room->fresh(), $host);
+            app(CalendarService::class)->syncRoomUpdated($room->fresh(), $host);
         }
 
         return $room->fresh();