Stack overflow when scrolling ListBox with changing content

[ahopper]

Describe the bug
When scrolling a ListBox and the content is changed in code at the same time a stack overflow results

To Reproduce
Run this https://github.com/ahopper/ListBoxScrollStackoverflowRepro and scroll the listbox continuously, after 8s the overflow will probably happen

Expected behavior
No stack overflow.

Desktop (please complete the following information):

• OS: Windows
• Version 0.10.12 and 0.10.999-cibuild0018930-beta

[ahopper]

The same thing happens if the ListBox is replaced with

<ScrollViewer>
	<ItemsControl Items="{Binding Stuff}"/>
</ScrollViewer>

[grokys]

Partially fixed by #9677: stack overflow is gone but now the ScrollBar gets stuck.