RawAutocomplete.onFieldSubmitted auto-selects the first option when
called, which means pressing "Done" on an empty tag value field
re-populates it with the first NSI suggestion. These tests prove the
bug exists (unguarded path) and verify the fix (guarded path).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Doug Borg