Setting DirectionalNavigation to None on TreeView item contents allows standard TreeView navigation

Author: StanleyGoldman

src/GitHub.VisualStudio/Views/GitHubPane/PullRequestDetailView.xaml

@@ -312,7 +312,8 @@
                                     </HierarchicalDataTemplate>
                                     <DataTemplate DataType="{x:Type vm:PullRequestFileNode}">
                                         <StackPanel Orientation="Horizontal"
-                                                    Tag="{Binding DataContext, RelativeSource={RelativeSource Mode=FindAncestor,AncestorType={x:Type ui:SectionControl}}}">
+                                                    Tag="{Binding DataContext, RelativeSource={RelativeSource Mode=FindAncestor,AncestorType={x:Type ui:SectionControl}}}"
+                                                    KeyboardNavigation.DirectionalNavigation="None">
                                             <ui:OcticonImage Icon="file_code" Margin="0,0,0,2">
                                                 <ui:OcticonImage.Style>
                                                     <Style TargetType="ui:OcticonImage" BasedOn="{StaticResource OcticonImage}">