title: prepopulating username field on Azure AD login
body: <p>When using Azure AD for authentication, does anyone know if it's possible to send the username as a parameter in the request to <a href="https://login.microsoftonline.com/aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee" rel="nofollow noreferrer">https://login.microsoftonline.com/aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee</a> so that this field is populated already in the login prompt? </p>