Fix double click on SidePanel to close

NPanel: remove WlrLayershell.keyboardFocus.OnDemand, only add it to
specific panels.

Modules/SettingsPanel/SettingsPanel.qml

@@ -24,6 +24,9 @@ NPanel {
   panelAnchorHorizontalCenter: true
   panelAnchorVerticalCenter: true
 
+  // Enable keyboard focus for settings panel
+  panelKeyboardFocus: true
+
   // Tabs enumeration, order is NOT relevant
   enum Tab {
     About,