Align stripping of attribute names in all objects

bigbluebutton/api/attendee.py

@@ -106,6 +106,8 @@ class Attendee:
 
     def _update_from_response(self, res: Dict[str, Any]) -> None:
         for name, value in res.items():
+            name = name.lstrip("@#")
+
             if name == "role":
                 self.role = Role(value)
             else:

bigbluebutton/api/meeting.py

@@ -224,6 +224,8 @@ class Meeting:
 
     def _update_from_response(self, res: Dict[str, Any]) -> None:
         for name, value in res.items():
+            name = name.lstrip("@#")
+
             if name == "attendees":
                 if not value or not value["attendee"]:
                     self.attendees.clear()