[Windows]CollectionView not show Header and Footer

[eliasribeiro]

Description

In Windows platform CollectionView not show Header and Footer.

Below is an example running on Android and Windows.

Steps to Reproduce

1. Create a new Maui Project.
2. Create a CollectionView on the MainPage like this:

<CollectionView>
    <CollectionView.ItemsSource>
        <x:Array Type="{x:Type x:String}">
            <x:String>Item 1</x:String>
            <x:String>Item 2</x:String>
        </x:Array>
    </CollectionView.ItemsSource>
    <CollectionView.Header>
        <Label Text="Header" />
    </CollectionView.Header>
    <CollectionView.ItemTemplate>
        <DataTemplate>
            <Label Text="{Binding .}" />
        </DataTemplate>
    </CollectionView.ItemTemplate>
    <CollectionView.Footer>
        <Label Text="Footer" />
    </CollectionView.Footer>
</CollectionView>

3. Run in Windows.

Link to public reproduction project repository

No response

Version with bug

8.0.0-rc.1.9171

Is this a regression from previous behavior?

Yes, this used to work in Xamarin.Forms, No, this is something new

Last version that worked well

Unknown/Other

Affected platforms

Windows

Affected platform versions

WinUI 3

Did you find any workaround?

I found no other alternative

Relevant log output

No response

[drasticactions]

This should be fixed with #17499,

It's not in RC1, but should work with Main and whenever RC2 gets released. If you try this against Main and have issues, feel free to reopen this.