- Moved KeyboardNavigation.TabNavigation="Once" from ProfilesView.xaml into App.xaml style definition

- Updated DefDataGrid style in App.xaml to include the TabNavigation setting
- Ensures consistent keyboard navigation behavior across all DataGrids in the application
- Simplifies view code and improves accessibility maintainability

v2rayN/v2rayN/App.xaml

@@ -149,6 +149,7 @@
                 BasedOn="{StaticResource MaterialDesignDataGrid}"
                 TargetType="{x:Type DataGrid}">
                 <Setter Property="FontSize" Value="{DynamicResource StdFontSize}" />
+                <Setter Property="KeyboardNavigation.TabNavigation" Value="Once" />
             </Style>
             <Style
                 x:Key="DefTextBox"

v2rayN/v2rayN/Views/ProfilesView.xaml

@@ -91,8 +91,7 @@
                 HeadersVisibility="All"
                 IsReadOnly="True"
                 RowHeaderWidth="40"
-                Style="{StaticResource DefDataGrid}"
-                KeyboardNavigation.TabNavigation="Once">
+                Style="{StaticResource DefDataGrid}">
                 <DataGrid.InputBindings>
                     <KeyBinding Command="ApplicationCommands.NotACommand" Gesture="Ctrl+C" />
                     <KeyBinding Command="ApplicationCommands.NotACommand" Gesture="Ctrl+V" />