CollectionView Does Not Scroll When EmptyView Exceeds Screen Size

### Description

On iOS, when a CollectionView has an EmptyView that exceed the screen height, the CollectionView does not become scrollable. However, the header seems to be scrollable when the list is empty.

### Steps to Reproduce

1. Create a new .NET MAUI app
2. Add a CollectionView with an EmptyView
3. Ensure the EmptyView is large enough (e.g., multiple labels or a large height request)
4. Run the app on iOS or Android
5. Try to scroll when no items are in the CollectionView.

### Link to public reproduction project repository

_No response_

### Version with bug

9.0.40 SR4

### Is this a regression from previous behavior?

Not sure, did not test other versions

### Last version that worked well

Unknown/Other

### Affected platforms

iOS

### Affected platform versions

iOS

### Did you find any workaround?

_No response_

### Relevant log output

```shell

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