Summary:
When an unconfirmed user tries to sign in or reset their password, the email
verification flow is now automatically restarted. Prior to this change, an
unconfirmed user error was shown in the client.
Test Plan: Deployment tests.
Reviewers: paulfitz, dsagal
Reviewed By: dsagal
Subscribers: dsagal
Differential Revision: https://phab.getgrist.com/D4133