(Proof of Concept) Following redirect url after creating an account from `/sign-in/choose`

[Ben2W]

Currently if a user is on /sign-in/choose with a redirect_url e.g. https://direct-flamingo-24.accounts.lclclerk.com/sign-in/choose?redirect_url=https%3A%2F%2Fdirect-flamingo-24.accounts.lclclerk.com%2Ftest

If you select a session, it follows the redirect url after selecting a session.

However when selecting "Add Account" it will not follow the redirect url after adding the account.

This is a POC (not to be reviewed) to demonstrate a working-example of how we can solve this