在SwiftUI %2中添加MapAnnotations不符合MapAnnotationProtocol

import SwiftUI
import MapKit

struct ContentView: View {
    @State private var region = MKCoordinateRegion(center: CLLocationCoordinate2D(latitude: 37.331516, longitude: -122.030028), span: MKCoordinateSpan(latitudeDelta: 0.2, longitudeDelta: 0.2))
    
    var body: some View {
        Map(coordinateRegion: $region, interactionModes: .all, showsUserLocation: true, annotationItems: [AnnotationItem()]) { item in
            MapAnnotation(coordinate: item.coordinate) {
                Text("Hello, World!")
            }
        }
    }
}

struct AnnotationItem: Identifiable, MapAnnotationProtocol {
    let id = UUID()
    let coordinate = CLLocationCoordinate2D(latitude: 37.331516, longitude: -122.030028)
}

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