[cragr] Handle ActionNeeded when first online connection

Some cragr web spaces have never been visited before and the user needs
to validate CGU before accessing them, so we raise an Action Neede when
we reach this specific web page:
"operations/interstitielles/premiere-connexion.html"

Closes: 35404@sibi, 35582@sibi, 35416@sibi, 9286@zendesk, 9328@zendesk,
9340@zendesk