Blazor Hybrid: Security and Identity with AAD B2C topic

[guardrex]

DON'T ASSIGN YET: Initial assignment will be made by PU management shortly.

When content is provided in an issue comment here, please remove the PU member assignment and assign the issue to @guardrex 🦖. PU member will be pinged on the PR when it goes up.

blazor/hybrid/security/azure-active-directory-b2c.md

[mkArtakMSFT]

We don't plan to document Azure AD specific authentication in Blazor / MAUI docs. We have a separate issue tracking integration of Blazor auth with MAUI which is here: dotnet/maui#2529