[Feature Request] When AcquireTokenOptions.FmiPath is not null or empty, Token acquisition should call WithFmiPath()

[jmprieur]

Is your feature request related to a problem? Please describe.
MSAL now exposes .WithFmiPath(string) on AcquireTokenForClientBuilder. We need to also expose it in the higher level APIs to support Federation Managed Identity.

Describe the solution you'd like
When AcquireTokenOptions.FmiPath is not null or empty and developers call (directly or through downstream API) the GetAuthenticationResultAsync method, IdWeb should call .WithFmiPath() on the ConfidentialClientApplicationBuilder, for instance here

Describe alternatives you've considered
None

Additional context

• See also [Feature Request] Add a new FmiPath string property to AcquireTokenOptions microsoft-identity-abstractions-for-dotnet#159 for the AcquireTokenOptions.FmiPath property
• For end to end testing work with @bgavrilMS (this is not requested yet part of this work item)