fix: disable icon smooth to prevent blur at fractional scaling

Disable smooth property on icon components to improve rendering performance.
禁用图标组件的平滑属性以提升渲染性能。

Log: 禁用图标平滑渲染
PMS: BUG-271229
Influence: 提升启动器图标渲染性能，显示更加清晰锐利。

Author: re2zero

qml/windowed/SideBar.qml

@@ -106,6 +106,7 @@ ColumnLayout {
                 palette: D.DTK.makeIconPalette(title.palette)
                 theme: D.DTK.toColorType(title.palette.window)
                 Layout.alignment: Qt.AlignHCenter
+                smooth: false
             }
 
             D.DciIcon {
@@ -114,6 +115,7 @@ ColumnLayout {
                 palette: D.DTK.makeIconPalette(title.palette)
                 theme: D.DTK.toColorType(title.palette.window)
                 Layout.alignment: Qt.AlignHCenter
+                smooth: false
             }
         }
 
@@ -143,6 +145,11 @@ ColumnLayout {
             width: 16
             height: 16
         }
+        Component.onCompleted: {
+            if (contentItem) {
+                contentItem.smooth = false
+            }
+        }
         background: ItemBackground {
             button: btn
         }