fix(course): update room ID generation in live session creation

Change the room ID format in CourseLiveSessionRoomCreateAPIView to use the course ID and a static string instead of a timestamp. This ensures consistent room IDs for live sessions.

apps/course/views/live_session.py

@@ -105,8 +105,7 @@ class CourseLiveSessionRoomCreateAPIView(GenericAPIView):
 
     @staticmethod
     def _build_room_id(course: Course) -> str:
-        timestamp = timezone.now().strftime('%Y%m%d%H%M%S')
-        return f"{course.slug}-{timestamp}"
+        return f"{course.id}:imamjavad"
 
     def _build_metadata(self, subject: str) -> dict:
         # Build secured, centralized metadata. Client overrides are NOT allowed.