fixup! MB 213: Customize the search engines list

  // This is prefixed with _ rather than # because it is

  // called in test_remove_engine_notification_box.js

  async _fetchEngineSelectorEngines() {

    const engines = await (

      await fetch(

        "chrome://global/content/search/mullvadBrowserSearchEngines.json"

      )

    ).json();

    return { engines, privateDefault: undefined };

    let searchEngineSelectorProperties = {

      locale: Services.locale.appLocaleAsBCP47,

      region: lazy.Region.home || "unknown",

      channel: lazy.SearchUtils.MODIFIED_APP_CHANNEL,

      experiment: this._experimentPrefValue,

      distroID: lazy.SearchUtils.distroID ?? "",

    };

    for (let [key, value] of Object.entries(searchEngineSelectorProperties)) {

      this._settings.setMetaDataAttribute(key, value);

    }

    return this.#engineSelector.fetchEngineConfiguration(

      searchEngineSelectorProperties

    );

  }

  #setDefaultFromSelector(refinedConfig) {