Add support for "prompt="select_user" with WASM / MSAL

[gusmanb]

When a user has more than one account for a service it is desirable to ask which account the user wants to use. Usually using MSAL on Javascript you can add "prompt=select_user" but this is not possible (as far as I know) to specify when using MSAL from Blazor.

The proposed feature would be to add to MsalProviderOptions a field to enable this.

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[mkArtakMSFT]

This is related to #25391

We've moved this issue to the Backlog milestone. This means that it is not going to be worked on for the coming release. We will reassess the backlog following the current release and consider this item at that time. To learn more about our issue management process and to have better expectation regarding different types of issues you can read our Triage Process.

[TestLearningUser]

I would like to know if Multitenant applications / accounts will be shown a propmpt for selecting a user,

For example i've got miguelmorales@test.com
that is invited into the tenant secondtest (miguelmorales_test#ext#@secondtest.com

Could I do login with miguelmorales@test.com and a promp "Which domain do you want to login" could be shown?
xx@test || xx@secondtest

As I belong to both tenants

¿Is this Issue created about this?