New to SwiftUI and have a beginners question. Need to send safeFrame width to a webview but struggle to get it to update correctly when rotating the phone.

I use this code in the body

        .onAppear() {
            let window = UIApplication.shared.windows[0]
            let safeFrame = window.safeAreaLayoutGuide.layoutFrame
            screenWidth = Int(safeFrame.width - 20)
        }
        .onRotate { newOrientation in
            let window = UIApplication.shared.windows[0]
            let safeFrame = window.safeAreaLayoutGuide.layoutFrame
            screenWidth = Int(safeFrame.height - 20)
        }

Together with this:

struct DeviceRotationViewModifier: ViewModifier {
    let action: (UIDeviceOrientation) -> Void

    func body(content: Content) -> some View {
        content
            .onAppear()
            .onReceive(NotificationCenter.default.publisher(for: UIDevice.orientationDidChangeNotification)) { _ in
                action(UIDevice.current.orientation)
            }
    }
}

// A View wrapper to make the modifier easier to use
extension View {
    func onRotate(perform action: @escaping (UIDeviceOrientation) -> Void) -> some View {
        self.modifier(DeviceRotationViewModifier(action: action))
    }
}

So, I use safeFrame.height because it seems like it reads values from before it gets a new orientation. However, it also seems like onRotate executes also when tilting the phone. I know, this is not a nice solution. Would be so much better if I could get the safeFrame width from the new orientation. Please give some ideas how I should code this instead.