Remove the unicode point & the duplicate icon name from icon details (#…

…1724)

## Description
This PR includes the following updates to improve the clarity and
conciseness of the icon details:
1. **Remove Unicode Point from Icon Details**: The `unicode point` has
been removed, as it adds redundancy without offering additional value.
The primary ways to use font icons (`text glyph` in XAML and `code
glyph` in C#) are already displayed.
2. **Remove Duplicate Icon Name**: Eliminates the repeated display of
the icon name within the icon details, streamlining the information
presented.

## Motivation and Context
- This change is required to streamline the icon details for clarity and
conciseness, especially with #1693 on the way.
- Closes #1722 

## How Has This Been Tested?
**Manually tested**

## Screenshots (if appropriate):

![image](https://github.com/user-attachments/assets/69f6fe64-aaa1-4717-b83b-1e02c5638260)

## Types of changes
<!--- What types of changes does your code introduce? Put an `x` in all
the boxes that apply: -->
- [ ] Bug fix (non-breaking change which fixes an issue)
- [X] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to change)

WinUIGallery/ControlPages/DesignGuidance/IconographyPage.xaml

@@ -186,20 +186,16 @@
                     BorderThickness="1,0,0,0"
                     DataContext="{x:Bind}">
                     <StackPanel>
-                        <TextBlock
-                            VerticalAlignment="Center"
-                            Style="{StaticResource SubtitleTextBlockStyle}"
-                            Text="{Binding SelectedItem.Name, Mode=OneWay}" />
                         <FontIcon
-                            Margin="0,12,0,12"
+                            Margin="0,12,0,24"
                             HorizontalAlignment="Left"
                             VerticalAlignment="Center"
                             FontFamily="{StaticResource SymbolThemeFontFamily}"
                             FontSize="{x:Bind (x:Double)FontsizeComboBox.SelectedValue, Mode=OneWay}"
                             Glyph="{Binding SelectedItem.Character, Mode=OneWay}" />
-
-                        <TextBlock Text="Unicode point" />
-                        <controls:SampleCodePresenter Code="{Binding SelectedItem.Code, Mode=OneWay}" Style="{StaticResource CodeValuePresenterStyle}" />
+                        
+                        <TextBlock Text="Icon name" />
+                        <controls:SampleCodePresenter Code="{Binding SelectedItem.Name, Mode=OneWay}" Style="{StaticResource CodeValuePresenterStyle}" />
                         <TextBlock Text="Text glyph" />
                         <controls:SampleCodePresenter Code="{Binding SelectedItem.TextGlyph, Mode=OneWay}" Style="{StaticResource CodeValuePresenterStyle}" />
                         <TextBlock Text="Code glyph" />