[BUG] Popup animation/ rendering

### Is there an existing issue for this?

- [x] I have searched the existing issues

### Did you read the "Reporting a bug" section on Contributing file?

- [x] I have read the "Reporting a bug" section on Contributing file: https://github.com/CommunityToolkit/Maui/blob/main/CONTRIBUTING.md#reporting-a-bug

### Current Behavior

We are looking to migrate from [Mopups ](https://github.com/LuckyDucko/Mopups) to the toolkit for popups.

We have a few issues with the current implementation -
- When animating the popup there is an outline of where the pop-up will be _(see video)_
- You can only animate within the final location, i.e. the above outline. F.e., in the video, the popup should be sliding down from off the page
- Can't see a way to override the tap to close, so we can animate it away

https://github.com/user-attachments/assets/d24b5602-0d4e-4d62-9404-293d4cd07e17

### Expected Behavior

- No outline for final popup location
- No restriction on where the popup and be displayed _(should display outside of the current outline)_
- A way to override the tap close logic

### Steps To Reproduce

A colleage has created a POC for us testing MAUI toolkit popup - https://github.com/kycuff/PopupProto

### Link to public reproduction project repository

https://github.com/kycuff/PopupProto

### Environment

```markdown
- .NET MAUI CommunityToolkit: 14.0.0
- OS: Android
- .NET MAUI: 10.0.30
```

### Anything else?

_No response_