Authenticator with only social sign in (hide regular sign in fields)

I cannot find a way to show only a google sign in button without showing anything else.
`socialProviders={["google"]` makes the google button show up. but I can't see a way to hide any of the other fields(The user name and password fields for regular sign in). Is there a way please? If not I would like to request this feature please.

Start at the Authenticator component and trace how the socialProviders={["google"]} option controls the sign-in fields. Confirm the expected behavior for a Google-only sign-in, then add coverage for hiding regular username and password fields while retaining the Google button.

Written by the indexing model from the issue text.