Testing CSP form-action:self with Blazor

testform.razor

@page "/testform"
@using Microsoft.Extensions.Logging
@using System.ComponentModel.DataAnnotations
@inject NavigationManager   Navigation
@inject LinkGenerator       LinkGenerator
@inject ILogger<TestForm>   Logger

<EditForm Model="Model" OnSubmit="Submit" FormName="OrderCharger">
    <label>
        Identifier:
        <InputText @bind-Value="Model!.Id"/>
    </label>
    <button class="">Submit</button>
    @if (Submitted)
    {
        <p>Submitted!!!</p>
    }
</EditForm>

@code {

    [SupplyParameterFromForm]
    private Starship? Model { get; set; }

    [CascadingParameter]
    private HttpContext? HttpContext { get; set; }

    public bool Submitted { get; set; }

    [Inject]
    private IJSRuntime JS { get; set; } = default!;

    protected override void OnInitialized()
    {
        Model     ??= new();
        Submitted =   false;
    }

    private void Submit()
    {
        Submitted = true;
        Logger.LogInformation("Id = {Id}", Model?.Id);
       

        Navigation.NavigateTo("/foo");
        //Navigation.NavigateTo(initializeOrderUrl, true);
        //HttpContext?.Response.Redirect(initializeOrderUrl, permanent: false);
        //await JS.InvokeVoidAsync("window.location.href", initializeOrderUrl);
    }

    public class Starship
    {
        [Required]
        [StringLength(10, ErrorMessage = "Id is too long.")]
        public string? Id { get; set; }
    }

}