Code Quality: Added work around for Toolkit MarkdownTextBlock

Author: yaira2

src/Files.App/UserControls/FilePreviews/MarkdownPreview.xaml.cs

@@ -1,8 +1,11 @@
 // Copyright (c) Files Community
 // Licensed under the MIT License.
 
+using CommunityToolkit.Labs.WinUI.MarkdownTextBlock;
 using Files.App.ViewModels.Previews;
+using Microsoft.UI.Xaml;
 using Microsoft.UI.Xaml.Controls;
+using Microsoft.UI.Xaml.Media;
 using Windows.System;
 
 namespace Files.App.UserControls.FilePreviews
@@ -15,6 +18,10 @@ public MarkdownPreview(MarkdownPreviewViewModel model)
 		{
 			ViewModel = model;
 			InitializeComponent();
+
+			// Workaround for https://github.com/CommunityToolkit/Labs-Windows/issues/611
+			PreviewMarkdownTextBlock.Config = MarkdownConfig.Default;
+			PreviewMarkdownTextBlock.Config.Themes.HeadingForeground = (Brush)Application.Current.Resources["TextControlForeground"];
 		}
 
 		private async void PreviewMarkdownTextBlock_OnLinkClicked(object sender, CommunityToolkit.Labs.WinUI.MarkdownTextBlock.LinkClickedEventArgs e)