message: fix: subscribe before getConfig
diff: @@ -17,8 +17,8 @@ export class ConfigClient {
  }
  async subscribe(topic, cb) {
  - const config = await this.configManagerProxy.getConfig(topic);
  await this.configManagerProxy.subscribe(topic, cb);
  + const config = await this.configManagerProxy.getConfig(topic);
  cb(config);
  }
  