dankbar: add a mask while popouts are open

- Retains ability to click items on the bar, while another is open

quickshell/Modules/ProcessList/ProcessListPopout.qml

@@ -45,9 +45,10 @@ DankPopout {
     triggerWidth: 55
     positioning: ""
     screen: triggerScreen
-    visible: shouldBeVisible
     shouldBeVisible: false
 
+    onBackgroundClicked: close()
+
     Ref {
         service: DgopService
     }