The logic used to has a special case for edge in the hostname which
didn't really make sense. So instead we just check to see if the given
url starts with http and if it does we return it directly. If it doesn't,
then we try to convert it to a valid url and return that. If that fails
we return .
Add a new custom metric `unresolved_marketing_link` to track when we
run into this scenario.
4ac2c5e92b