Context

If a candidate tries to login with the candidate email address and they have a one login email address that is different from the candidate email address. We will not allow the user to login, with one login.

We will redirect the user to the wrong_email_address page. From here the user can try to login again.

Previously we would have redirected the user to 500 error page. This page is intended to have more content helping the candidate to unstuck themselves rather than contacting support

Changes proposed in this pull request

New candidate wrong email page

Guidance to review

Link to Trello card

https://trello.com/c/mZLgSj2z

Things to check

• If the code removes any existing feature flags, a data migration has also been added to delete the entry from the database
• This code does not rely on migrations in the same Pull Request
• If this code includes a migration adding or changing columns, it also backfills existing records for consistency
• If this code adds a column to the DB, decide whether it needs to be in analytics yml file or analytics blocklist, if included inform data insights team of the changes
• If this code adds a column that may include PII, the sanitise.sql script and 0025-protecting-personal-data-in-production-dump.md ADR have been updated.
• API release notes have been updated if necessary
• If it adds a significant user-facing change, is it documented in the CHANGELOG?
• Attach the PR to the Trello card