[CmdPal] Fix keyboard navigation double Tab stop in details panel (#46346)

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fix/what does it change/how was it tested (even manually, if necessary)?
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## Summary of the Pull Request

Fixes a keyboard accessibility issue in Command Palette where Tab
navigation would stop twice on container elements in the details panel
instead of navigating to details panel and then directly to interactive
controls. The items in the Details Panel aren't really interactable
anyways (the AllAppsPage & ClipBoard History just displays details)

This is part of the a11y bug batch.
User Impact:
Keyboard-only and assistive-technology users may experience confusion,
extra navigation effort, and reduced efficiency when interacting with
the Search Apps pane.

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## PR Checklist

- [ ] Closes: #xxx
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- [x] **Communication:** I've discussed this with core contributors
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- [ ] **Tests:** Added/updated and all pass
- [ ] **Localization:** All end-user-facing strings can be localized
- [ ] **Dev docs:** Added/updated
- [ ] **New binaries:** Added on the required places
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## Detailed Description of the Pull Request / Additional comments

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## Validation Steps Performed



https://github.com/user-attachments/assets/0d5f0f20-040c-4d22-b769-3fe318c66697

src/modules/cmdpal/Microsoft.CmdPal.UI/Pages/ShellPage.xaml

@@ -85,7 +85,8 @@
                         HorizontalAlignment="Stretch"
                         HorizontalContentAlignment="Left"
                         Click="Command_Click"
-                        Style="{StaticResource SubtleButtonStyle}">
+                        Style="{StaticResource SubtleButtonStyle}"
+                        UseSystemFocusVisuals="{StaticResource UseSystemFocusVisuals}">
                         <StackPanel VerticalAlignment="Center" Orientation="Horizontal">
                             <cpcontrols:IconBox
                                 Width="16"
@@ -110,6 +111,7 @@
                         Padding="0"
                         Command="{x:Bind NavigateCommand, Mode=OneWay}"
                         NavigateUri="{x:Bind Link, Mode=OneWay}"
+                        UseSystemFocusVisuals="{StaticResource UseSystemFocusVisuals}"
                         Visibility="{x:Bind IsLink, Mode=OneWay}">
                         <TextBlock Text="{x:Bind Text, Mode=OneWay}" TextWrapping="Wrap" />
                     </HyperlinkButton>
@@ -119,6 +121,7 @@
                 <StackPanel Orientation="Vertical" Spacing="4">
                     <TextBlock Style="{StaticResource DetailKeyTextBlockStyle}" Text="{x:Bind Key, Mode=OneWay}" />
                     <ItemsControl
+                        IsTabStop="False"
                         ItemTemplate="{StaticResource CommandTemplate}"
                         ItemsSource="{x:Bind Commands, Mode=OneWay}"
                         Visibility="{x:Bind HasCommands, Mode=OneWay}" />
@@ -142,6 +145,7 @@
                 <StackPanel Orientation="Vertical" Spacing="4">
                     <TextBlock Style="{StaticResource DetailKeyTextBlockStyle}" Text="{x:Bind Key, Mode=OneWay}" />
                     <ItemsControl
+                        IsTabStop="False"
                         ItemTemplate="{StaticResource TagTemplate}"
                         ItemsSource="{x:Bind Tags, Mode=OneWay}"
                         Visibility="{x:Bind HasTags, Mode=OneWay}">
@@ -394,10 +398,17 @@
                     Margin="4"
                     HorizontalAlignment="Stretch"
                     ui:VisualExtensions.NormalizedCenterPoint="0.5,0.5"
+                    AutomationProperties.AccessibilityView="Content"
+                    AutomationProperties.HelpText="{x:Bind ViewModel.Details.Body, Mode=OneWay}"
+                    AutomationProperties.LandmarkType="Custom"
+                    AutomationProperties.LocalizedLandmarkType="Details"
+                    AutomationProperties.Name="{x:Bind ViewModel.Details.Title, Mode=OneWay}"
                     Background="{ThemeResource CardBackgroundFillColorDefaultBrush}"
                     BorderBrush="{ThemeResource CmdPal.DividerStrokeColorDefaultBrush}"
                     BorderThickness="1"
                     CornerRadius="{StaticResource ControlCornerRadius}"
+                    IsTabStop="True"
+                    UseSystemFocusVisuals="{StaticResource UseSystemFocusVisuals}"
                     Visibility="Collapsed">
                     <animations:Implicit.ShowAnimations>
                         <animations:OpacityAnimation
@@ -450,12 +461,14 @@
                             Margin="0,4,0,24"
                             Background="Transparent"
                             Config="{StaticResource DefaultMarkdownConfig}"
+                            IsTabStop="False"
                             Text="{x:Bind ViewModel.Details.Body, Mode=OneWay}"
                             UseEmphasisExtras="True"
                             UsePipeTables="True" />
 
                         <ItemsRepeater
                             Grid.Row="3"
+                            IsTabStop="False"
                             ItemTemplate="{StaticResource DetailsDataTemplateSelector}"
                             ItemsSource="{x:Bind ViewModel.Details.Metadata, Mode=OneWay}">
                             <ItemsRepeater.Layout>