ngrok login (Google SSO)

Log into the ngrok dashboard via the "Log in with Google" button. Drives the Google account chooser (and consent screen if one appears) and lands on dashboard.ngrok.com. If already signed in, returns immediately. Requires running on the extension-paired browser rather than a managed/cloud browser. If Google requires a step-up (password re-confirm, 2FA, or passkey), that has to be cleared manually before this can complete — re-run afterward. Optional `email` arg picks which account row to use in the chooser; omit for the first row.