NavigationView crash

[Porterbg]

Describe the bug

System.Windows.Markup.XamlParseException: ''Set property 'System.Windows.Media.SolidColorBrush.Color' threw an exception.' Line number '200' and line position '26'.'
InvalidOperationException: '#0F000000' is not a valid value for property 'Color'.

To Reproduce

Start sample app
In the auto suggest type and select NavigationView
Note: It will not crash if you manually go to Navigation->NavigationView from navigation pane
Also crashes in apps using preview 8 and does not crash when using preview 7

Expected behavior

Should not crash

Screenshots

No response

OS version

Windows 10

.NET version

.net 6

WPF-UI NuGet version

3.0.0-preview.8

Additional context

No response

[wfjsw]

aff99851

wpfui/src/Wpf.Ui/Controls/NavigationView/NavigationViewTop.xaml

Line 200 in a58feed

<SolidColorBrush Color="{DynamicResource FlyoutBorderBrush}" />

[niels9001]

PR to fix this issue: #839