SwiftUI beta 7:添加条目时触发`List`滚动？

struct ContentView: View {
    @State private var scrollToIndex: Int? = nil
    
    var body: some View {
        ScrollViewReader { scrollViewProxy in
            List {
                ForEach(0..<10) { index in
                    Text("Item \(index)")
                        .id(index)
                }
            }
            .onChange(of: scrollToIndex) { newIndex in
                if let index = newIndex {
                    withAnimation {
                        scrollViewProxy.scrollTo(index, anchor: .center)
                    }
                }
            }
        }
    }
}

Button("Add Item") {
    scrollToIndex = 10 // 滚动到索引为10的位置
}