fix #2125 - cannot login using WebAssembly, remove granular 404 logging as it is already managed by url mapping, make IModule ReleaseVersions optional when using EF Core migrations

Oqtane.Server/Pages/External.cshtml.cs

@@ -1,6 +1,5 @@
 using System.Net;
 using Microsoft.AspNetCore.Authentication;
-using Microsoft.AspNetCore.Authentication.OpenIdConnect;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.AspNetCore.Mvc.RazorPages;
 using Oqtane.Extensions;