deleteKey method
Implementation
Future<void> deleteKey(CatalogRow row) async {
await _client.deleteKey(keyPath: row.keyPath);
_queue.removeKey(row.keyPath);
_valueDrafts.removeWhere((key, draft) => draft.keyPath == row.keyPath);
_noteDrafts.remove(row.keyPath);
await _queue.refreshSummary();
}