IOS开发-在safari中打开来自webview的url链接，而不是当前的webview

import UIKit
import WebKit

class ViewController: UIViewController, WKNavigationDelegate {
    var webView: WKWebView!

    override func viewDidLoad() {
        super.viewDidLoad()
        
        webView = WKWebView(frame: self.view.frame)
        webView.navigationDelegate = self
        self.view.addSubview(webView)
        
        if let url = URL(string: "https://example.com") {
            let request = URLRequest(url: url)
            webView.load(request)
        }
    }

    // MARK: - WKNavigationDelegate
    
    func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {
        if let url = navigationAction.request.url {
            if navigationAction.navigationType == .linkActivated {
                UIApplication.shared.open(url, options: [:], completionHandler: nil)
                decisionHandler(.cancel)
            } else {
                decisionHandler(.allow)
            }
        } else {
            decisionHandler(.allow)
        }
    }
}