android fix: release focus after scrolling

MiddlePanel.qml

@@ -166,6 +166,11 @@ Rectangle {
             Layout.fillWidth: true
             Layout.fillHeight: true
             clip: true
+
+            onFlickingChanged: {
+                releaseFocus();
+            }
+
             // Disabled scrollbars, gives crash on startup on windows
 //            ScrollIndicator.vertical: ScrollIndicator { }
 //            ScrollBar.vertical: ScrollBar { }       // uncomment to test