Add SSO registration flow feature specs in ee/spec/features/registrations/saas
Summary
Following the discovery of the standard registration flow steps being disconnected from the SSO registration flow in https://gitlab.com/gitlab-org/gitlab/-/issues/395754#note_1347418240 and following bug (https://gitlab.com/gitlab-org/gitlab/-/issues/406615, Growth should add SSO registration flow feature specs in ee/spec/features/registrations/saas to better ensure against future regressions.
Plan
Add SSO coverage for all onboarding specs
Edited by Doug Stull