Is your feature request related to a problem? Please describe.
I am trying to add the prompt query parameter to the AuthenticationProperties when making an authentication request to Microsoft Accounts. Version 2.2.0 - the current non-preview version of the package - does not parse this parameter when it is added to the AuthenticationProperties.Parameters dictionary.
We need to set this parameter to prevent the authentication flow from automatically logging in when there is only one user cookie. We want to allow our customers to select/add another account to log in with.
Behavior without a prompt parameter:

Behavior with a prompt parameter

Describe the solution you'd like
Microsoft.AspNetCore.Authentication.MicrosoftAccounts supports adding prompt query parameter, for .netcore 2.2.
Additional context
I am aware that there was work done to support parameters for Microsoft Accounts, and that there is a preview version of the package on nuget. However, this package has dotnet 3.0 as a dependency, which is is scheduled for GA on September. Is it possible to have a 2.2.* version of the package that support Microsoft Accounts?