message: perf: set header can use For Qs
  set header can use For Qs
diff: @@ -155,7 +155,7 @@ export class VAxios {
  // support form-data
  supportFormData(config: AxiosRequestConfig) {
  - const headers = config.headers;
  + const headers = config.headers || this.options.headers;
  const contentType = headers?.['Content-Type'] || headers?.['content-type'];
  if (
  