如何在SWIFT UI小部件中使分隔线高度等于水平堆栈的另一个子级

import SwiftUI

struct ContentView: View {
    var body: some View {
        VStack {
            Text("Hello, World!")
            
            Divider()
            
            HStack {
                Text("Child View 1")
                    .padding()
                    .background(Color.gray)
                
                Divider()
                    .background(GeometryReader { geometry in
                        Color.clear.preference(key: SizeKey.self, value: geometry.size.height)
                    })
                
                Text("Child View 2")
                    .padding()
                    .background(Color.gray)
            }
            .onPreferenceChange(SizeKey.self) { height in
                Divider()
                    .frame(height: height)
                    .background(Color.gray)
            }
        }
    }
}

struct SizeKey: PreferenceKey {
    static var defaultValue: CGFloat = 0
    
    static func reduce(value: inout CGFloat, nextValue: () -> CGFloat) {
        value = nextValue()
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}