如何在SwiftUI中删除最新列表项中的分隔符？

import SwiftUI

struct ContentView: View {
    @State private var items = ["Item 1", "Item 2", "Item 3"]

    var body: some View {
        NavigationView {
            List {
                ForEach(items, id: \.self) { item in
                    Text(item)
                }
                .onDelete(perform: deleteItem)
            }
            .listStyle(InsetGroupedListStyle()) // 使用InsetGroupedListStyle样式
            .navigationTitle("My List")
            .toolbar {
                ToolbarItem(placement: .navigationBarTrailing) {
                    Button(action: addItem) {
                        Image(systemName: "plus")
                    }
                }
            }
        }
    }

    func addItem() {
        let newItem = "Item \(items.count + 1)"
        items.append(newItem)
    }

    func deleteItem(at offsets: IndexSet) {
        items.remove(atOffsets: offsets)
    }
}

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