Look for last successful name-preorder for step 2 rather that the most recent

name-preorder was issued twice. First once succeeded, second one failed. The UI to issue name-register would only find the most recent, failed name-preorder, which made it impossible to complete the registration.

Start by tracing the UI flow for name-preorder and name-register, focusing on how prior preorder results are selected. Reproduce the case where the latest preorder failed after an earlier success, then verify that registration can use the successful result while preserving the expected behavior for other cases.

Written by the indexing model from the issue text.