Using composition on elements inside a `ScrollView` crash the app

### Describe the bug

This happens whenever you call `ElementCompositionPreview::GetElementVisual()` on any elements inside a `ScrollView`, even when you did absolutely nothing.

### Why is this important?

This stops developers from utilizing the composition apis for advanced visual and effect.

### Steps to reproduce the bug

1. Create a new winui 3 project
2. Use this xaml
```xml



```
3. In the window constructor
```cpp
MainWindow::MainWindow()
{
InitializeComponent();
auto visual = winrt::Microsoft::UI::Xaml::Hosting::ElementCompositionPreview::GetElementVisual(CompositionHost());
}
```

### Actual behavior

Crash

### Expected behavior

Works.

### Screenshots

_No response_

### NuGet package version

None

### Windows version

Windows 10 (1809): Build 17763

### Additional context

Curiously, changing to `ScrollViewer` and doing the same thing does not cause a crash. Sugguesting there is some unexpected internal logic going wrong here.

Start with the provided WinUI 3 reproduction using a Grid inside ScrollView and ElementCompositionPreview::GetElementVisual(). Compare that behavior with the ScrollViewer variant mentioned in the issue and trace where the call crashes. Done means retrieving the visual for an element inside ScrollView without crashing.

Written by the indexing model from the issue text.