Change the create a passkey screen to show the username/displayName from

request rather than showing all createOptions under this provider and
change the logic after it got selected

screenshot: https://screenshot.googleplex.com/4UARFE3ZpgVtEeD

Test: deployed locally

Bug: 253157211
Change-Id: Ia622a2c66eaadc268e7c37e5b2c9e348bd6502fb