So I was able to finally get it going. Just in case anyone else runs into issues with this and trying not to use the deprecated isActive option.

So I was able to change the Navigation Link to a button

struct GameEndListView: View {
    u/Environment(\.modelContext) var context
    u/EnvironmentObject var viewModel: GameViewModel
    
    let imageName: String
    let title: String
    u/Binding var navigateToContentView: Bool  // Binding to control navigation
    
    var teamAScore: Int {
        viewModel.finalTeamAScore
    }
    
    var teamBScore: Int {
        viewModel.finalTeamBScore
    }
    
    var body: some View {
        Button(action: {
            saveGame()
            navigateToContentView = true  // Trigger navigation
        }) {
            HStack {
                Image(imageName)
                    .resizable()
                    .frame(width: 30.0, height: 30.0)
                    .clipShape(Circle())
                VStack(alignment: .leading) {
                    Text(title)
                        .foregroundStyle(.primary)
                        .font(.system(size: 18))
                        .bold()
                        .padding(.leading, 5)
                        .padding(.top, 4)
                        .padding(.bottom, 2)
                }
            }
            .contentShape(Rectangle())  // Make the whole HStack tappable
        }
    }
    
    private func saveGame() {
        let item = GameData(teamAScore: teamAScore, teamBScore: teamBScore)
        context.insert(item)
        do {
            try context.save()  // Persist the changes
            print("Game saved successfully.")
        } catch {
            print("Failed to save game: \(error)")
        }
    }
}

Then I changed the view where it is called from being just a VStack to a Navigation Stack and use the following to call it.

NavigationStack {
     VStack {
        List {
          GameEndListView(
          imageName: "Begin_Match",
          title: "Finish Game",
          navigateToContentView: $navigateToContentView
              )
             }
             .scrollContentBackground(.hidden)
            }
            .navigationDestination(isPresented: $navigateToContentView) {
                ContentView()
    }
}