How to remove top space of principal ToolbarItem in sidebarAdaptable TabView

When creating a principal ToolbarItem in a sidebarAdaptable TabView, unwanted space appears at the top.

Here's my code:

struct ContentView: View {
    var body: some View {
        TabView {
            Tab("Tab", systemImage: "star") {
                NavigationStack {
                    Text("Hello, World!")
                        .toolbar {
                            ToolbarItem(placement: .principal) {
                                Text("↑ Space")
                            }
                        }
                        .navigationBarTitleDisplayMode(.inline)
                }
            }
        }
        .tabViewStyle(.sidebarAdaptable)
    }
}

I would like to know how to remove this space.

Environment:

• Xcode 16.2.0
• iOS 18.2