Fix unsafe redirect errors from Rollbar

[murny]

We are getting a few of these:

We are redirecting to a generic request.referer which in Rails 7 is now an error since we are redirecting to an external URL.

We should look into improving this logic. Either approvelist the possible URLs here or just allow this behavior via allow_other_host: true

Maybe look into redirect_back_or_to method which might simplify this logic as well.