Qualify shell palette references for Qt 6.12 (#14553)

shell/plugins/panels/elsewhen/HeroTitle.qml

@@ -1,5 +1,6 @@
 import QtQuick
 import qs.Commons
+import qs.Commons as Commons
 import "GlobeModel.js" as Solar
 
 // "World [globe] Clock" under an arched caption. The little globe is the door
@@ -10,7 +11,7 @@ Column {
   property string caption: ""
   property color captionColor: dim
   property bool captionClickable: false
-  property color foreground: Color.foreground
+  property color foreground: Commons.Color.foreground
   property color dim: Qt.darker(foreground, 1.55)
   property string fontFamily: Style.font.family