[SettingsControls] Switch to object type for ItemTemplate property

[yourordinarycat]

The ItemsRepeater.ItemTemplate property allows using a DataTemplate, DataTemplateSelector or IElementFactory. This is quite convenient to have, and to allow for this, the property is of type IInspectable (and from C# we see object :D)

SettingsExpander has an ItemTemplate property as well, but it only allows setting a DataTemplate, and because of the lack of extra properties in the ItemsRepeater, it's not possible to use a template selector or element factory. This PR addresses the problem by switching to object for the ItemTemplate property.

[yourordinarycat]

@dotnet-policy-service agree

[yourordinarycat]

Got a new sample in - should be good now 👍

[niels9001]

Tested.. works great. Great job @yourordinarycat :)!

This can be merged once the XAML styler issue is resolved:

D:\a\Labs-Windows\Labs-Windows\ApplyXamlStyling.ps1 : XAML Styling is incorrect, please run locally:
ApplyXamlStyling.ps1 -Main

If you run ApplyXamlStyling.ps1 -Main and push the changes CI should pass :)

[yourordinarycat]

Should pass now - as an aside, is there something I'm missing from my setup? The script was failing initially:

I could fix it by replacing line 100:

dotnet tool run xstyler -p -c .\settings.xamlstyler -f $files

With:

xstyler -p -c .\settings.xamlstyler -f $files

Not sure if it's just a me thing, but it did work, so it should be good for now~

[Arlodotexe]

@yourordinarycat Running dotnet tool restore once should fix the issue. We do this for you automatically in the PowerShell script, I'm not sure why it didn't work for you 🤔