Navigation controls are garbled in the case of using Chinese content！

[Linjie123]

Describe the bug

    <NavigationView x:Name="NvSample"
                    Grid.Row="0"
                    IsBackButtonVisible="Collapsed"
                    IsPaneVisible="True"
                    IsSettingsVisible="True"
                    ItemInvoked="NvSample_ItemInvoked"
                    Loaded="NvSample_Loaded"
                    PaneDisplayMode="Left"
                    SelectionFollowsFocus="Enabled">
        <NavigationView.MenuItems>
            <NavigationViewItem x:Name="Home"
                                Content="主页"
                                Icon="Home" />
            <NavigationViewItem Content="学员管理"
                                Icon="List"
                                IsExpanded="True"
                                SelectsOnInvoked="False">
                <NavigationViewItem.MenuItems>
                    <NavigationViewItem x:Name="Studentmessage"
                                        Content="学员信息"
                                        Icon="Message" />
                    <NavigationViewItem x:Name="Upload"
                                        Content="批量导入"
                                        Icon="Upload" />
                </NavigationViewItem.MenuItems>
            </NavigationViewItem>
            <NavigationViewItem Content="考勤管理"
                                Icon="Switch"
                                IsExpanded="True"
                                SelectsOnInvoked="False">
                <NavigationViewItem.MenuItems>
                    <NavigationViewItem x:Name="Attend"
                                        Content="考勤打卡"
                                        Icon="Document" />
                    <NavigationViewItem x:Name="Attendquery"
                                        Content="考勤查询"
                                        Icon="Document" />
                </NavigationViewItem.MenuItems>
            </NavigationViewItem>
            <NavigationViewItem Content="成绩管理"
                                Icon="Home"
                                IsExpanded="True"
                                SelectsOnInvoked="False">
                <NavigationViewItem.MenuItems>
                    <NavigationViewItem x:Name="ScoreManage"
                                        Content="成绩管理"
                                        Icon="Sort" />
                    <NavigationViewItem x:Name="Scorequery"
                                        Content="成绩查询"
                                        Icon="Filter" />
                </NavigationViewItem.MenuItems>
            </NavigationViewItem>
        </NavigationView.MenuItems>

        <Frame x:Name="ShellFrame">
            <Frame.ContentTransitions>
                <TransitionCollection>
                    <NavigationThemeTransition />
                </TransitionCollection>
            </Frame.ContentTransitions>
        </Frame>
    </NavigationView>

Steps to reproduce the bug

none

Expected behavior

No response

Screenshots

NuGet package version

Windows App SDK ：1.2.221209.1
Windows App SDK ：1.2.221116.1
Windows App SDK ：1.2.221109.1

Packaging type

Packaged (MSIX)

Windows version

Windows 11 version 22H2 (22623, 2022 Update)

IDE

Visual Studio 2022

Additional context

No response

[bpulliam]

You can ave the xaml file as Utf-8 to fix the problem. I have also changed the templates to be Utf-8 to avoid this in the future.