chore(ruff): fix private member accessed violation

Author: vlaci

onekey_client/cli/firmware_upload.py

@@ -71,7 +71,7 @@ def upload_firmware(
         click.echo(res["id"])
     except QueryError as e:
         click.echo("Error during firmware upload:")
-        for error in e._errors:
+        for error in e.errors:
             click.echo(f"- {error['message']}")
         sys.exit(11)
 

onekey_client/errors.py

@@ -34,7 +34,7 @@ class QueryError(ClientError):
     """raised when a GraphQL query returns errors."""
 
     def __init__(self, errors_json: dict):
-        self._errors = errors_json
+        self.errors = errors_json
 
     def __str__(self):
-        return json.dumps(self._errors, indent=4)
+        return json.dumps(self.errors, indent=4)