TreeView Virtualisation broken in .Net 8

[rosjat]

Description

The Issue decribed in #7321 seems to persist in .Net 8

Reproduction Steps

1. Using Treeview with Virtualisation false -> All items get rendered but of course slow
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2. Using Treeview with Virtualisation true -> nested items seem to get created but not rendered correctly
   

Expected behavior

The TreeViewItems should be all rendered

Actual behavior

The TreeViewItems are not all rendered

Regression?

No response

Known Workarounds

No response

Impact

No response

Configuration

No response

Other information

No response

[dipeshmsft]

@rosjat this issue seems a little different than the issue you have mentioned in the description, they look the same but I think there is a slight difference between what is happening. Can you please, create a minimal repro project for us to get a better understanding of the bug.

[rosjat]

Will do next week