How to Implement Storefront SSO for OSF Application?

Summary:

Referring to Doc ID 2863131.1

Content (required):

For the most part the doc provided an example which we have adapted to our use. It works mostly. We have just migrated from the classic storefront to the OSF Live in our dev environment. It worked in classic fine, and now that OSF is our live application, the configuration was not changed. I am able to execute the example code to route the user to the IDP, perform the login, and then the issue it seems is a redirect loop upon going back the storefront. No matter what I set relayState to, in the SAML request captured (using