HarmonyOS setWindowSystemBarProperties修改状态栏颜色

可以设置下窗口为全屏布局，不去设置setWindowSystemBarProperties

mainWindowClass.setWindowLayoutFullScreen(true, (err: BusinessError) => {
  let errCode: number = err.code;
  if (errCode) {
    console.error('Failed to set the window layout to full-screen mode. Cause:' + JSON.stringify(err));
    return;
  }
  console.info('Succeeded in setting the window layout to full-screen mode.');
});