Fix to prevent guests from seeing features

Author: lukebarnard1

src/settings/handlers/DeviceSettingsHandler.js

@@ -102,7 +102,7 @@ export default class DeviceSettingsHandler extends SettingsHandler {
  _readFeature(featureName) {
  if (MatrixClientPeg.get() && MatrixClientPeg.get().isGuest()) {
  // Guests should not have any labs features enabled.
- return {enabled: false};
+ return false;
  }
 
  const value = localStorage.getItem("mx_labs_feature_" + featureName);