[Bug] WithAccount(result.Account) doesn't work with WAM

[bgavrilMS]

MSAL 4.40

1. AcquireTokenInteractive with WAM with no login hint -> account picker shows up
2. AcquireTokenInteractive with WAM for a different scope, using .WithAccount(result.Account);

Actual: account picker shows up displaying ALL accounts
Expected: account should be pre-selected

Root cause: tenant profiles seems to override the WAM account ID:

https://github.com/AzureAD/microsoft-authentication-library-for-dotnet/blob/master/src/client/Microsoft.Identity.Client/AuthenticationResult.cs#L145

Workaround:

Use app.GetAccountsAsync() to get the accounts again and pass in that account.

[bgavrilMS]

The account object from the cache has a property named WamAccountId which is needed to link an MSAL account to a WAM account.

This is particularly important when using a 3p app and trying to use MSA accounts, because we can't link MSAL account to WAM account by usename.