message: qt, refactor: simplify third-party tx url action through overload
  Simplify the creation, addition, and slot/signal connection of
  a third part tx url context menu action by using an overloaded
  addAction function.
diff: @@ -229,11 +229,9 @@ void TransactionView::setModel(WalletModel *_model)
  QString host = QUrl(url, QUrl::StrictMode).host();
  if (!host.isEmpty())
  {
  - QAction *thirdPartyTxUrlAction = new QAction(host, this); // use host as menu item label
  if (i == 0)
  contextMenu->addSeparator();
  - contextMenu->addAction(thirdPartyTxUrlAction);
  - connect(thirdPartyTxUrlAction, &QAction::triggered, [this, url] { openThirdPartyTxUrl(url); });
  + contextMenu->addAction(host, [this, url] { openThirdPartyTxUrl(url); });
  }
  }
  }
  