Describe the bug
WinAppSDK 1.6.240821007-preview2 crashes (Unexpected type for enumerator) when iterating over ListView.Items if the ListView.ItemsSource is set via CollectionViewSource.

To Reproduce

Sample to reproduce the crash:

var items = new List<string>
{
    "Item 1",
    "Item 2"
};

var source = new CollectionViewSource()
{
    Source = items
};
TheList.ItemsSource = source.View;

...

// Invoked via a button or something
foreach (var item in TheList.Items)
{
    // Crash
}

TheList is a simple ListView control.

Expected behavior
It shouldn't crash/throw an exception

Version Info

• TargetFramework: net8.0-windows10.0.22621.0
• TargetPlatformMinVersion: 10.0.17763.0
• WindowsSdkPackageVersion: 10.0.22621.38
• Microsoft.WindowsAppSDK package version: 1.6.240821007-preview2

Additional context
This is blocking WinAppSDK 1.6 version bump for .NET MAUI.