Lock the bar to the top of the screen

shell/plugins/notifications/Service.qml

@@ -45,7 +45,7 @@ Item {
   // pull notification popups away from the expected top-right location.
   // Falls back to the bar's default size (26 horizontal / 28 vertical) when
   // shell.bar isn't reachable so the popup never lands on top of the bar.
-  readonly property string barPosition: shell && shell.barConfig ? String(shell.barConfig.position || "top") : "top"
+  readonly property string barPosition: "top"
   readonly property bool barVertical: barPosition === "left" || barPosition === "right"
   readonly property int defaultBarSize: barVertical ? Style.bar.sizeVertical : Style.bar.sizeHorizontal
   readonly property int liveBarSize: shell && shell.bar && !shell.bar.barHidden ? Math.max(0, shell.bar.barSize) : defaultBarSize