如何防止被推送的SFSafariViewController解雇UITabBarController？

class ViewController: UIViewController, SFSafariViewControllerDelegate {
    // ...
    
    func openSafariViewController() {
        let url = URL(string: "https://www.example.com")!
        let safariViewController = SFSafariViewController(url: url)
        safariViewController.delegate = self
        present(safariViewController, animated: true, completion: nil)
    }
    
    // SFSafariViewControllerDelegate方法
    func safariViewControllerDidFinish(_ controller: SFSafariViewController) {
        // 在此处处理SFSafariViewController即将被推送的事件
        // 可以通过dismiss方法关闭SFSafariViewController，并保持UITabBarController的显示
        controller.dismiss(animated: true, completion: nil)
    }
    
    // ...
}

class ViewController: UIViewController, UIViewControllerTransitioningDelegate {
    // ...
    
    func openSafariViewController() {
        let url = URL(string: "https://www.example.com")!
        let safariViewController = SFSafariViewController(url: url)
        safariViewController.transitioningDelegate = self
        present(safariViewController, animated: true, completion: nil)
    }
    
    // UIViewControllerTransitioningDelegate方法
    func animationController(forDismissed dismissed: UIViewController) -> UIViewControllerAnimatedTransitioning? {
        // 返回自定义的转场动画对象，用于在SFSafariViewController被推送时保持UITabBarController的显示
        return CustomTransitionAnimator()
    }
    
    // ...
}