PeekAreaInsets is not applied properly before the first and last item in CarouselViewHandler2.iOS

### Description

In `CarouselViewHandler2`.iOS, `PeekAreaInsets` is not applied before the first and last item in CarouselView2.

The video below demonstrates this issue.

### Actual

https://github.com/user-attachments/assets/17e19261-f0b4-4e13-93f3-c9e55ae6421f

### Expected

https://github.com/user-attachments/assets/531bd6ee-6fe5-403d-b8bb-d9375ec535f2

### Steps to Reproduce

[CarouselViewPeekAreaInsets.zip](https://github.com/user-attachments/files/18781242/CarouselViewPeekAreaInsets.zip) --Deploy this sample

### Link to public reproduction project repository

_No response_

### Version with bug

9.0.40 SR4

### Is this a regression from previous behavior?

No, this is something new

### Last version that worked well

Unknown/Other

### Affected platforms

iOS, macOS

### Affected platform versions

iOS,MAC

### Did you find any workaround?

_No response_

### Relevant log output

```shell

```

Start with CarouselViewHandler2.iOS and deploy the attached CarouselViewPeekAreaInsets.zip sample on iOS or macOS. Compare the first and last CarouselView2 items with the expected video, then verify that PeekAreaInsets is applied at both ends without changing the intended middle-item behavior.

Written by the indexing model from the issue text.