MediaPicker.CapturePhotoAsync calls OnAppearing after capturing image in iOS

### Description

When I capture an image in iOS and after Camera window closes then OnAppearing of the page is called.

### Steps to Reproduce

1. Create new .Net MAUI project.
2. Add a button in UI and on the click of button call below code.

```
var file = await MediaPicker.CapturePhotoAsync(new MediaPickerOptions
{
Title = "Take a photo",
});

if (file != null)
{
await DisplayAlertAsync(null, "Image Captured", "Ok");
}
```

3. OnAppearing will trigger.

### Link to public reproduction project repository

_No response_

### Version with bug

10.0.11

### Is this a regression from previous behavior?

Yes, this used to work in .NET MAUI

### Last version that worked well

Unknown/Other

### Affected platforms

iOS

### Affected platform versions

iOS 26.1

### Did you find any workaround?

_No response_

### Relevant log output

```shell

```

Start by reproducing the behavior in a new .NET MAUI project on iOS 26.1 using MediaPicker.CapturePhotoAsync, then trace why the page's OnAppearing runs when the camera window closes. Done means photo capture still succeeds without unexpectedly triggering OnAppearing; no source files or tests are identified in the issue, so locating the relevant implementation and regression coverage is part of the work.

Written by the indexing model from the issue text.