[Blazor] Virtualization does not work with web components

### Describe the bug

Blazor's `Virtualize` component tries to find the surrounding scroll container by moving up the elements tree and look for an element where `overflow-y` != `visible`. (see [here](https://github.com/dotnet/aspnetcore/blob/main/src/Components/Web.JS/src/Virtualize.ts#L33))

Unfortunately that way it will not find scrollable containers within web components, since it never checks for the shadow root on any element.

### Expected Behavior

Virtualization should also just work for custom scroll containers that are built using web components.

pseudo html:
```html

```

### Steps To Reproduce

_No response_

### Exceptions (if any)

_No response_

### .NET Version

6.0.400

### Anything else?

_No response_