message: Remove `type` field from jetstream error response
diff: @@ -262,7 +262,7 @@ enum ApiResponse<T> {
  // deserializes successfully is the one returned.
  //
  // Therefore the error case must come first, otherwise it can be ignored.
  - Err { r#type: String, error: Error },
  + Err { error: Error },
  Ok(T),
  }
  