refactor, qt: Use std::chrono for input_filter_delay constant

Author: hebasto

src/qt/transactionview.cpp

@@ -19,6 +19,7 @@
 
 #include <node/ui_interface.h>
 
+#include <chrono>
 #include <optional>
 
 #include <QApplication>
@@ -114,8 +115,8 @@ 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);