fix(ukui-menu): 修改系统强调色，开始菜单新安装应用右侧圆点不会立即修改

qml/AppControls2/AppItem.qml

@@ -64,11 +64,12 @@ MouseArea {
                 Component {
                     id: tagPoint
                     Item {
-                        Rectangle {
+                        StyleBackground {
                             anchors.centerIn: parent
                             width: 8; height: width
                             radius: width / 2
-                            color: themePalette.paletteColor(Palette.Highlight)
+                            paletteRole: Palette.Highlight
+                            useStyleTransparent: false
                         }
                     }
                 }