Review fixes for the incident-attribution change:

- In a vertical panel with hidden meters, an incident on a provider other
  than the selected one kept no marker: the identity badge now anchors to
  the primary incident's provider via identityCarriesIncidentBadge, and
  the standalone status element stays available whenever that icon cannot
  carry the badge, so every incident stays visible and attributed.
- The meter incident badge no longer hides while a refresh runs; the
  refresh keeps rendered providers, so the badge must not flicker away
  with loading.
- The provider account label now fills the meta row capped at its own
  text width, so Text.ElideMiddle actually applies on narrow popups
  while the plan stays directly beside the email.
- Tests: decouple the overview detail predicates (nonempty unknown
  status falls through to source; source/title/provider repetitions
  matched independently), reset the incident fixture state in init(),
  and cover the vertical fallback rows, the refresh badge, and the
  header elision; surface contracts updated to the new bindings.