getBannedKbcLabels method
Returns the current set of banned patch labels — patches that auto-rolled-back and won't be re-applied. Dashboards / support flows can show these; clearBannedKbcLabels resets the set.
Implementation
Future<Set<String>> getBannedKbcLabels() async {
final prefs = await SharedPreferences.getInstance();
return _getBannedLabels(prefs);
}