[ui] further tweaks for calyx

"pick location" menu was a transitional menu item to be able to open
window without altering too much the current UI flow that operates on
the systray, and as an interim until the simply secure proposal was in
place.

for calyx, it makes sense to open the window directly.

gui/qml/main.qml

@@ -280,8 +280,10 @@ ApplicationWindow {
         /* this is a temporary workaround until general GUI revamp for 0.21.8 */
         let provider = Logic.getSelectedProvider(providers);
         if (provider == "calyx") {
-            background.backgroundVisible = false;
             background.color = "#8EA844";
+            background.backgroundVisible = false;
+            gwSelector.visible = false;
+            manualSelectionButton.visible = false;
         }
 
         if (!systrayAvailable) {