feat: SAML feedback changes [CW-5666] (#12511)

app/views/api/v1/models/_agent.json.jbuilder

@@ -5,6 +5,7 @@ json.availability_status resource.availability_status
 json.auto_offline resource.auto_offline
 json.confirmed resource.confirmed?
 json.email resource.email
+json.provider resource.provider
 json.available_name resource.available_name
 json.custom_attributes resource.custom_attributes if resource.custom_attributes.present?
 json.name resource.name