The string still described the old UI navigation ("Menu → Security and
Backup → Show key/seeds"). With FeatureFlag.hasNewUi there is no Menu,
and the Show seed/keys row is commented out of the Security page. Seeds
and keys now live at Settings → Wallet settings → Seed & Keys.
Rendered in two places, both reachable:
- seed_verification_success_view.dart:54
- wallet_group_existing_seed_description_page.dart:57
