[46618] Changing SiS statsd callback so that it uses actual user ial …

[bosawt]

…instead of requested acr value in statsd and logged values

Description of change

Changing Sign in Service callback statsd and log context so that it uses ial value, which represents the actual verification level the user is authenticated with, rather than acr value, which represents the requested verification value for the user

Original issue(s)

department-of-veterans-affairs/va.gov-team#46618

Things to know about this PR

• Authenticate with sign in service
• Check for log that should include ial value as a logged field, like this: [SignInService] [V0::SignInController] callback -- { :type => "logingov", :client_id => "mobile", :ial => 2 }