message: refactor, qt: Use std::chrono for input_filter_delay constant
diff: #include <node/ui_interface.h>
  +#include <chrono>
  #include <optional>
  #include <QApplication>
  @@ -117,8 +118,8 @@ TransactionView::TransactionView(const PlatformStyle *platformStyle, QWidget *pa
  amountWidget->setValidator(amountValidator);
  hlayout->addWidget(amountWidget);
  - // Delay before filtering transactions in ms
  - static const int input_filter_delay = 200;
  + // Delay before filtering transactions
  + static constexpr auto input_filter_delay{200ms};
  QTimer* amount_typing_delay = new QTimer(this);
  amount_typing_delay->setSingleShot(true);
  