Password migration issue

The dummy user's credentials:

• Username: [email protected]
• Password: secret

Setup

1. Run make up to start the Docker containers
2. Run make setup-database to create the DB schema and load fixtures
3. The app is available at http://localhost:8080

Flow 1:

1. Go to http://localhost:8080/login
2. Log in using the credentials from above

Symfony will use legacy_md5_password_encoder because the User entity implements PasswordHasherAwareInterface. The legacy hasher's needsRehash always returns true so Symfony will re-hash the user's plaintext password using the legacy hasher.

Flow 2:

1. Remove the PasswordHasherAwareInterface implementation from src/Entity/User.php
2. Go to http://localhost:8080/login
3. Log in using the credentials from above

Symfony will now use vendor/symfony/password-hasher/Hasher/MigratingPasswordHasher.php to verify the given password because it doesn't seem to know this user needs to use the legacy hasher. Login fails due to usage of wrong hasher.