[TabView] TabViewItem retains selected color when reordering tab.

[hihihaha2025]

Describe the bug

When reordering a tab and then selecting a different tab, the background color of the previously selected tab is still retained.

Steps to reproduce the bug

1. Add the following code to TabView
   <TabView> <TabView.Resources> <ResourceDictionary> <ResourceDictionary.ThemeDictionaries> <ResourceDictionary x:Key="Light"> <SolidColorBrush x:Key="TabViewBackground" Color="{ThemeResource SystemAccentColorLight2}"/> </ResourceDictionary> <ResourceDictionary x:Key="Dark"> <SolidColorBrush x:Key="TabViewBackground" Color="{ThemeResource SystemAccentColorDark2}"/> </ResourceDictionary> </ResourceDictionary.ThemeDictionaries> </ResourceDictionary> </TabView.Resources> </TabView>
2. Add some tab items to TabView
3. Select a tab (e.g. "Tab 4"), then reorder this tab.
4. Click on another tab (e.g. "Tab 3")
5. The background color of the previously selected Tab remains.

Expected behavior

When performing step 4, the result is as shown:

Screenshots

NuGet package version

WinUI 3 - Windows App SDK 1.7.0: 1.7.250310001

Windows version

Windows 10 (20H2): Build 19042, Windows 10 (21H2): Build 19044

Additional context

No response