TextBlock render '\' as the Japanese currency symbol ¥ or Korean currency symbol ₩.

[boxing-wang]

Describe the bug

When using the ApplicationLanguages::PrimaryLanguageOverride(L"jp") or ApplicationLanguages::PrimaryLanguageOverride(L"ko") to set the app's languae, the TextBlock render the '\' symbol as the Japanese currency symbol ¥ or Korean currency symbol ₩.

Why is this important?

The GridView item in a XAML file:

        <GridView.ItemTemplate>
            <DataTemplate x:DataType="local:ShapeData">
                <StackPanel
                    Orientation="Horizontal"
                    CornerRadius="4">
                    <StackPanel
                        Orientation="Vertical"
                        VerticalAlignment="Center"
                        Margin="0,0,4,4">
                       ...
                        <TextBlock
                            Text="{x:Bind CodeString, Mode=OneWay}"
                            Style="{ThemeResource CaptionTextBlockStyle}"
                            FontSize="12"
                            HorizontalAlignment="Left"
                            Margin="0,4,0,0" />
                    </StackPanel>
            </DataTemplate>
        </GridView.ItemTemplate>

using the ApplicationLanguages::PrimaryLanguageOverride(L"jp") or ApplicationLanguages::PrimaryLanguageOverride(L"ko") to set the app's languae, the TextBlock render the '\' symbol as the Japanese currency symbol ¥ or Korean currency symbol ₩.

Steps to reproduce the bug

1. Create a WinUI project.
2. The content of Main Window is GridView.
3. Use the TextBlock control to render the unicode string, like "\U+0031".
4. Use the ApplicationLanguages::PrimaryLanguageOverride(L"jp") or ApplicationLanguages::PrimaryLanguageOverride(L"ko") to set the app's languae.

Actual behavior

Expected behavior

Screenshots

No response

NuGet package version

WinUI 2.0.12

Windows version

Windows 11 (24H2): Build 26100

Additional context

No response