message: Make theme optional and set default value
diff: @@ -93,8 +93,9 @@ ipcMain.on(apiName.symphonyApi, async (event: Electron.IpcMainEvent, arg: IApiAr
  downloadHandler.setWindow(event.sender);
  break;
  case apiCmds.showNotificationSettings:
  - if (typeof arg.windowName === 'string' && typeof arg.theme === 'string') {
  - windowHandler.createNotificationSettingsWindow(arg.windowName, arg.theme);
  + if (typeof arg.windowName === 'string') {
  + const theme = arg.theme ? arg.theme : 'light';
  + windowHandler.createNotificationSettingsWindow(arg.windowName, theme);
  }
  break;
  case apiCmds.sanitize:
  