Fix notification configure button

Unfortunately we cannot make the systray popup does not close when the config dialog appears

applets/notifications/package/contents/ui/NotificationDelegate.qml

@@ -168,7 +168,6 @@ PlasmaComponents.ListItem {
                 }
             }
             onConfigure: {
-                plasmoid.hidePopup()
                 configureNotification(model.appRealName)
             }
             onAction: {

applets/notifications/package/contents/ui/NotificationPopup.qml

@@ -92,6 +92,7 @@ PlasmaCore.Dialog {
             text: notificationProperties ? notificationProperties.body : ""
             icon: notificationProperties ? notificationProperties.appIcon : ""
             image: notificationProperties ? notificationProperties.image : undefined
+            configurable: notificationProperties ? notificationProperties.configurable : false
 
             anchors {
                 fill: parent
@@ -110,6 +111,10 @@ PlasmaCore.Dialog {
                 closeNotification(notificationProperties.source)
                 notificationPopup.hide()
             }
+            onConfigure: {
+                configureNotification(notificationProperties.appRealName)
+                notificationPopup.hide()
+            }
             onAction: {
                 executeAction(notificationProperties.source, actionId)
                 actions.clear()