Suggested code to add to Fields.xaml

<smtx:XamlDisplay
Grid.Row="1"
Grid.Column="4"
UniqueKey="fields_30">

            <StackPanel>
                <CheckBox
                    x:Name="MaterialDesignOutlinedPasswordFieldTextCountComboBox"
                    Content="View Text Input Count"/>

What would you like to be added:

Adding a binding to a BindingBase property from the XAML should unwrap the binding expression.

For which Platform:

• iOS
• Android
• WebAssembly
• WebAssembly renderers for Xamarin.Forms
• Windows
• Build tasks
• Solution Templates

Anything else we need to know?

This check should also validate for `Binding

Describe the bug
Adding a reference to a ClassLibrary project from a UWP application project generates a XAML compiler warning.

Steps to reproduce the bug

1. Open Visual Studio 2019 (or 2017)
2. Create a new Universal Windows Class Library project
3. Create a new Universal Windows Application project in the same solution
4. Add a reference to the Class Library project from the Appl