CmdPal: Styling critical context items using the SystemFillColorCriticalBrush (#39645)

Styles context items based on the IsCritical property.


![image](https://github.com/user-attachments/assets/aa1ee0b0-de09-45af-8f5e-74dff666fbb4)


![image](https://github.com/user-attachments/assets/90a7f750-c949-4f76-b699-db2e29251414)

Closes #38307

src/modules/cmdpal/Microsoft.CmdPal.UI/Styles/TextBlock.xaml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<ResourceDictionary
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:converters="using:CommunityToolkit.WinUI.Converters">
+
+    <ResourceDictionary.MergedDictionaries>
+        <XamlControlsResources xmlns="using:Microsoft.UI.Xaml.Controls" />
+        <!--  Other merged dictionaries here  -->
+    </ResourceDictionary.MergedDictionaries>
+
+    <Style
+        x:Key="ContextItemTitleTextBlockCriticalStyle"
+        BasedOn="{StaticResource BaseTextBlockStyle}"
+        TargetType="TextBlock">
+        <Setter Property="Foreground" Value="{ThemeResource SystemFillColorCriticalBrush}" />
+        <Setter Property="FontWeight" Value="Normal" />
+    </Style>
+
+    <Style
+        x:Key="ContextItemCaptionTextBlockCriticalStyle"
+        BasedOn="{StaticResource CaptionTextBlockStyle}"
+        TargetType="TextBlock">
+        <Setter Property="Foreground" Value="{ThemeResource SystemFillColorCriticalBrush}" />
+    </Style>
+
+</ResourceDictionary>