Double Tap on TabView return the view to root

I tried to implement code of @kentrobin which allowed user to return to root view in a navigation stack if tabview is clicked again.

Code : https://kentrobin.com/home/tap-tab-to-go-back/

Here is my implementation

import SwiftUI
import Combine

struct ContactView: View {
    @StateObject var viewModel: ContactViewModel = .init()
    let subject: PassthroughSubject<HomeViewModel.Tab, Never>

    @State private var searchTerm = ""
    @State private var people: [ContactsData] = personsData
    var filteredSearch: [ContactsData] {
        guard !searchTerm.isEmpty else { return people }
        return people.filter {
            $0.name.localizedCaseInsensitiveContains(searchTerm)
        }
    }

    var groupedPeople: [(key: String, value: [UUID])] {
        Dictionary(grouping: people, by: { $0.affiliation })
            .mapValues { value in value.map { $0.id } } 
            .sorted(by: { $0.key < $1.key })
    }

    var body: some View {
        NavigationStack(path: $viewModel.path){
            VStack {
                List{
                    ForEach(Division.allCases, id:\.self){ division in    
                        Section(header: Text(division.rawValue)){
                            ForEach(personsData, id:\.self){ person in
                                if person.affiliation == division.rawValue { 

                                    NavigationLink(destination: ContactContentView(contact: person)){

                                        ContactCardView(contact: person)

                                    }
                                    .onAppear(){
                                        print("showing contact CARD for \(person.name)")
                                    }

                                }}

                            }

                        }
                    }
                }
                .navigationTitle("Contacts")
                .onReceive(subject) { tab in
                    if case .contactBook = tab { viewModel.tabBarTapped() }
                }
            }

        }

    }

    struct ContactContentView: View {

        let contact: ContactsData

        var body: some View {
            ZStack {
                Color(contact.coat)
                    .ignoresSafeArea(edges: .top)
                VStack {
                    Text(contact.name)
                    Text(contact.contactNumber)
                    Text(contact.address)
                }
            }
            .onAppear(){
                print("opened view \(contact.name)")
            }
        }
        init(contact: ContactsData) { 
                self.contact = contact
            }
    }

    struct ContactCardView: View {
        let contact: ContactsData

        var body: some View {
            VStack(alignment: .leading) {
                Text(contact.name)
                Text(contact.contactNumber)
                    .font(.subheadline)
                    .foregroundColor(.secondary)
            }

        }
        init(contact: ContactsData) { 
                self.contact = contact
            }
    }

struct ContactsData : Identifiable, Hashable {
    var id = UUID()
    var name: String
    var contactNumber: String
    var address: String
    var coat: Color
    var affiliation: String
}

and the data is like this

let personsData = [
    ContactsData(name: "William Jobs", contactNumber: "256-789-0121", address: " NY", coat: .gold, affiliation: "Teacher"),
    ContactsData(name: "Jane Smith", contactNumber: "456-789-0123", address: "456 Oak St, Townburg", coat: .purple, affiliation: "Librarian")]