Authenticating user with REST API does not update user details

Summary

When authenticating without password validation, Crowd just fetch the user from cache and user details are not updated.

Steps to Reproduce

1. Connect to delegated LDAP directory
2. Ensure that "Synchronize user details" is checked
3. Authenticate users to REST endpoint without specifying password

Expected Results

User details, such as email are updated.

Actual Results

User details are not updated

Only when authenticating with password validation, Crowd will call the actual authenticate method which handles updates.

Workaround

Call a method in com.atlassian.crowd.manager.application.ApplicationService called userAuthenticated which will force an update of the user.