Module 6 - Preserving State is broken

[csharpfritz]

In Module 6, the preserving state section does not function as described. This will need a fix and a small rewrite

https://github.com/dotnet-presentations/blazor-workshop/blob/main/docs/06-authentication-and-authorization.md#preserving-order-state-across-the-redirection-flow

[brentkilboy]

It worked fine for me.