V13: Allow anonymous calls for UmbLoginStatusController.HandleLogout action

[elit0451]

Details

• Fixes: Deleted member is not logged out and cannot log out. #17013
• You can log out after the member you are logged in as has been deleted.

Test

• Create RegisterMember.cshtml partial view from snippet;
• Create Login.cshtml partial view from snippet;
• Create LoginStatus.cshtml partial view from snippet;
• Create a doc type contentPage and in its template add:

@using Umbraco.Cms.Web.Common.PublishedModels;
@using Umbraco.Cms.Core.Services;
@inherits Umbraco.Cms.Web.Common.Views.UmbracoViewPage<ContentModels.ContentPage>
@inject IMemberService MemberService
@using ContentModels = Umbraco.Cms.Web.Common.PublishedModels;
@{
	Layout = null;
	var isLoggedIn = Context.User?.Identity?.IsAuthenticated ?? false;
}

@if (!isLoggedIn)
{
    @await Html.PartialAsync("RegisterMember")
    <hr/>
    <br/>
    @await Html.PartialAsync("Login")
}
else
{
    @await Html.PartialAsync("LoginStatus")
}

• Register a member - you will be logged in;
• Verify that you can logout when the member still exists;
• Login again;
• Delete the member from the backoffice;
• Verify that you are able to logout with the member after deletion.