How to disable NavigationView content scrollbar

Describe the bug

How can I disable the scrollbar that appears when displaying a NavigationViewItem when using NavigationView?

To Reproduce

    <ui:NavigationView
        x:Name="RootNavigation"
        Grid.Row="1"
        BorderBrush="Transparent"
        BorderThickness="1"
        Loaded="NavigationView_Loaded"
        PaneDisplayMode="LeftFluent">

        <ui:NavigationView.MenuItems>
            <ui:NavigationViewItem TargetPageType="{x:Type views:HomePage}">
                <ui:NavigationViewItem.Icon>
                    <ui:SymbolIcon Symbol="Home24" />
                </ui:NavigationViewItem.Icon>
            </ui:NavigationViewItem>
        </ui:NavigationView.MenuItems>
    </ui:NavigationView>

<Grid>
    <StackPanel
        MaxHeight="{Binding ActualHeight, RelativeSource={RelativeSource AncestorType=Window}}"
        HorizontalAlignment="Center"
        VerticalAlignment="Center">
        <ui:TextBlock
            HorizontalAlignment="Center"
            VerticalAlignment="Center"
            FontSize="24"
            Foreground="Black"
            Text="Text&gt;&gt;&gt;" />
        <ui:TextBlock
            HorizontalAlignment="Center"
            VerticalAlignment="Center"
            FontSize="24"
            Foreground="Black"
            Text="Text&gt;&gt;&gt;" />

       ...... more TextBlock

    </StackPanel>

</Grid>

Expected behavior

The navigationview's scrollbar has disappeared. I can control whether a portion of the scrollbar is displayed within the page.

Screenshots

OS version

Windows11

.NET version

.net 8

WPF-UI NuGet version

4.1.0

Additional context

No response

The reproduction uses NavigationView, NavigationViewItem, and a HomePage XAML view in WPF-UI 4.1.0. Start by reproducing the scrollbar behavior with the provided markup, then trace the NavigationView content presenter and related styling to identify the supported way to control it. Done means the navigation scrollbar is absent while page scrolling remains controllable.