Activating authenticator not possible - causes exception

[MarcoTheFirst]

Repro:

1. Run the sample DX.Test.Blazor8
2. Register as new user
3. Login as user
4. Go to profile and try to activate the authenticator app using the button

Exception:
DevExpress.Data.Filtering.Exceptions.InvalidPropertyPathException: 'Property path 'User!Key' is incorrect for type 'DX.Data.Xpo.Identity.Persistent.XpoDxUserToken'.'
In XpoDxUserToken.cs:19

After some more digging, I found out that the XpoDxUserToken instance is created, but the user property is never assigned (it has value null). This is why the XPO evaluation above fails.

[donwibier]

There was an error in the Property path for XPO, and a missing Mapster TypeConfig which prohibited the storage of the XpoDxUserToken object. This has been resolved.