fix: disable icon smooth to icon blur

Set smooth: false on icon items to fix rendering artifacts.
禁用图标组件的平滑属性以解决小图标模糊。

Log: 修复图标渲染模糊问题
PMS: BUG-271229
Influence: 小图标渲染更清晰，避免模糊伪影。

Author: re2zero

qml/windowed/SideBar.qml

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: 2024 UnionTech Software Technology Co., Ltd.
+// SPDX-FileCopyrightText: 2024 - 2026 UnionTech Software Technology Co., Ltd.
 //
 // SPDX-License-Identifier: GPL-3.0-or-later
 
@@ -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
         }