Qualify shell palette references for Qt 6.12 (#14553)

shell/plugins/panels/power/Panel.qml

@@ -3,6 +3,7 @@ import Quickshell
 import Quickshell.Io
 import Quickshell.Services.UPower
 import qs.Commons
+import qs.Commons as Commons
 import qs.Ui
 import "Model.js" as Model
 
@@ -88,7 +89,7 @@ Panel {
   }
 
   readonly property color batteryFillColor: {
-    return root.bar ? root.bar.foreground : Color.foreground
+    return root.bar ? root.bar.foreground : Commons.Color.foreground
   }
 
   // Cute agent-flavored phrases shown in the hero status line, rotated on a