pre-commit fixes

Author: ci.datadog-api-spec

src/datadog_api_client/api_client.py

@@ -462,6 +462,9 @@ def use_delegated_token_auth(self, headers: Dict[str, Any]) -> None:
         """
         from datadog_api_client.delegated_auth import DelegatedTokenConfig
 
+        # Check if we have cached credentials
+        if not hasattr(self.configuration, "_delegated_token_credentials"):
+            self.configuration._delegated_token_credentials = None
 
         # Check if we need to get or refresh the token
         if (