add default request expiry to preferences/config

electrum/gui/qml/components/ReceiveDetailsDialog.qml

@@ -84,26 +84,9 @@ ElDialog {
             Layout.fillWidth: false
         }
 
-        ElComboBox {
+        RequestExpiryComboBox {
             id: expires
             Layout.columnSpan: 2
-
-            textRole: 'text'
-            valueRole: 'value'
-
-            model: ListModel {
-                id: expiresmodel
-                Component.onCompleted: {
-                    // we need to fill the model like this, as ListElement can't evaluate script
-                    expiresmodel.append({'text': qsTr('10 minutes'), 'value': 10*60})
-                    expiresmodel.append({'text': qsTr('1 hour'), 'value': 60*60})
-                    expiresmodel.append({'text': qsTr('1 day'), 'value': 24*60*60})
-                    expiresmodel.append({'text': qsTr('1 week'), 'value': 7*24*60*60})
-                    expiresmodel.append({'text': qsTr('1 month'), 'value': 31*24*60*60})
-                    expiresmodel.append({'text': qsTr('Never'), 'value': 0})
-                    expires.currentIndex = 0
-                }
-            }
         }
 
         Item { width: 1; height: 1; Layout.fillWidth: true }