fix

Author: davidzhao

livekit-rtc/livekit/rtc/participant.py

@@ -129,7 +129,7 @@ def disconnect_reason(
         """
         if (
             self._info.disconnect_reason
-            == proto_participant.DisconnectReason.DISCONNECT_REASON_UNKNOWN
+            == proto_participant.DisconnectReason.UNKNOWN_REASON
         ):
             return None
         return self._info.disconnect_reason