Virtualize component returns empty result in Firefox when being used in shadow DOM

### Is there an existing issue for this?

- [x] I have searched the existing issues

### Describe the bug

There seems to be a bug with the `Virtualize` component when being used within the shadow DOM in Mozilla Firefox.

This works just fine in both Edge and Chrome. Only within Mozilla Firefox the Virtualize component will always render empty results.

### Expected Behavior

I would expect the Virtualize component to render the items in all browsers.

### Steps To Reproduce

Please take a look on this issue in the FluentUI repository: https://github.com/microsoft/fluentui-blazor/issues/1978

To reproduce you can open the demo sites in Firefox and run the Many Items demos: https://www.fluentui-blazor.net/Autocomplete