External IdP shortcut for Login missing DisplayName

[YC]

In the shortcut code for displaying only 1 external IdP, the DisplayName property is not set.

if (!local)
{
    View.ExternalProviders = new[] { new ViewModel.ExternalProvider ( authenticationScheme: context.IdP ) };
}

https://github.com/DuendeSoftware/IdentityServer.Templates/blob/main/src/IdentityServerAspNetIdentity/Pages/Account/Login/Index.cshtml.cs#L172

It is therefore not included in VisibleExternalProviders.

public IEnumerable<ViewModel.ExternalProvider> VisibleExternalProviders => ExternalProviders.Where(x => !String.IsNullOrWhiteSpace(x.DisplayName));

https://github.com/DuendeSoftware/IdentityServer.Templates/blob/main/src/IdentityServerAspNetIdentity/Pages/Account/Login/ViewModel.cs#L12C1-L12C152

This results to the error message of Invalid login request being displayed in the UI.

https://github.com/DuendeSoftware/IdentityServer.Templates/blob/main/src/IdentityServerAspNetIdentity/Pages/Account/Login/Index.cshtml#L81