Setting styles in templated control causes control to crash under windows

[kucint]

Create a simple control and try to set its style to some default style:

internal class MyControl : Control
{
    public MyControl()
    {
        DefaultStyleKey = typeof(MyControl);
        Style = _defaultStyle;  // crashes with COMException
    }
}

This causes exception:
COMException: 'No installed components were detected.
Cannot apply a Style with TargetType 'Controls.MyControl'

the app crashes only under net8.0-windows10.0.19041
under net8.0-desktop all is OK

to reproduce:

• take the app UnoAppTemplateBindingWorking.zip written by @dr1rrb for the purpose of #2270
• Add net8.0-windows10.0.19041 to its TargetFrameworks.
• Run as net8.0-windows10.0.19041 'unpackaged'
• It crashes (note that if ran under net8.0-desktop, the app works fine)

Alternatively take this one to reproduce: UnoNoInstalledComponentsApp.zip

Tested only with windows:
"Uno.Sdk": "5.2.139"

[MartinZikmund]

@kucint Apparently there is some limitiation in WinUI that requires controls to have default styles defined. To do so, you can create a XAML resource dictionary like:

<ResourceDictionary
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:my="using:UnoAppTemplateBindingNotWorking.Controls">
    <Style TargetType="my:MyControl" />
</ResourceDictionary>

And then reference that dictionary in App.xaml:

<Application
    x:Class="UnoAppTemplateBindingNotWorking.App"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <Application.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="ms-appx:///MyDictionary.xaml" />
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </Application.Resources>
</Application>