fix(AppControls2): 最近安装标记颜色跟随主题色变化

qml/AppControls2/AppItem.qml

@@ -69,13 +69,14 @@ MouseArea {
                     }
                 }
 
-                Rectangle {
+                UkuiItems.StyleBackground {
                     id: tagPoint
                     visible: tagLabel.sourceComponent != null ? false : isRecentInstalled
                     anchors.centerIn: parent
                     width: 8; height: width
                     radius: width / 2
-                    color: Platform.Theme.highlight()
+                    useStyleTransparency: false
+                    paletteRole: Platform.Theme.Highlight
                 }
             }
         }