PresentationLink bug workaround for SwiftUI (Xcode b3)

PresentationLink2.swift

extension UIApplication {
    /// The top most view controller
    static var topMostViewController: UIViewController? {
        return UIApplication.shared.keyWindow?.rootViewController?.visibleViewController
    }
}

extension UIViewController {
    /// The visible view controller from a given view controller
    var visibleViewController: UIViewController? {
        if let navigationController = self as? UINavigationController {
            return navigationController.topViewController?.visibleViewController
        } else if let tabBarController = self as? UITabBarController {
            return tabBarController.selectedViewController?.visibleViewController
        } else if let presentedViewController = presentedViewController {
            return presentedViewController.visibleViewController
        } else {
            return self
        }
    }
}

public struct PresentationLink2<Label: View, Destination: View>: View {
    public let destination: Destination

    let _label: () -> Label

    public var label: Label {
        return _label()
    }

    public init(destination: Destination, label: @escaping () -> Label) {
        self.destination = destination
        self._label = label
    }

    public var body: some View {
        return _label().tapAction {
            UIApplication.topMostViewController?.presentViewControllerFromVisibleViewController(UIHostingController(rootView: self.destination), animated: true, completion: nil)

        }
    }
}