CollectionViewHandler2 RelativeSource binding to AncestorType not working after ItemsSource update

[alexpetin]

Description

Almost the same issue as described at #26066 which was fixed only partially.
Now RelativeSource bindings works for initially loaded items, but stop working after updating.

...
CollectionView.ItemsSource = SomeInitialData; // ok for now
...
CollectionView.ItemsSource = SomeNewData; // RelativeSource bindings stop working

Steps to Reproduce

1. Build and run repro project on iOS device or simulator;
2. Tap on any collection view item - DisplayAlert will be shown;
3. Pull down to refresh items, tap - no DisplayAlert, tap command is null after refresh

Link to public reproduction project repository

https://github.com/alexpetin/TestCollView2

Version with bug

9.0.90 SR9

Is this a regression from previous behavior?

Not sure, did not test other versions

Last version that worked well

No response

Affected platforms

iOS

Affected platform versions

Tested on iOS 15.2, 18.5. I think any version.

Did you find any workaround?

Did not find.

Relevant log output

[devanathan-vaithiyanathan]

This issue has been verified in Visual Studio Code 1.100.2 with MAUI versions 9.0.0 and 9.0.90. It can be reproduced on iOS platform.

Note: On iOS, this issue is reproducible with CV2 but not with CV1.