Try refreshing token for 404 error.

ads/llm/langchain/plugins/llms/oci_data_science_model_deployment_endpoint.py

@@ -260,7 +260,7 @@ def _check_response(self, response: Any) -> None:
                 if hasattr(response, "status_code")
                 else response.status
             )
-            if status_code == 401 and self._refresh_signer():
+            if status_code in [401, 404] and self._refresh_signer():
                 raise TokenExpiredError() from http_err
 
             raise ServerError(