CollectionView with Header Causes ArgumentOutOfRangeException on reordering to last index

[sylac]

Description

When using item reordering in CollectionView (#3768) with a defined Header, I encounter an ArgumentOutOfRangeException when attempting to move an item to the last position of the list. This issue is not present when the Header is omitted.

System.ArgumentOutOfRangeException: 'Index was out of range. Must be non-negative and less than or equal to the size of the collection. (Parameter 'index')'

Steps to Reproduce

1. Create default MAUI project
2. Define a CollectionView with a Header and ItemTemplate to xaml file:

<CollectionView
    x:Name="TestCollectionView"
    CanReorderItems="True"
    CanMixGroups="True">

    <CollectionView.Header>
        <Label Text="Header"/>
    </CollectionView.Header>
    
    <CollectionView.ItemTemplate>
        <DataTemplate>
            <Label Text="{Binding .}"/>
        </DataTemplate>
    </CollectionView.ItemTemplate>
</CollectionView>

3. Populate ItemSource in xaml.cs file:

public TestCollectionViewPage()
{
    InitializeComponent();
    TestCollectionView.ItemsSource = new List<string>()
    {
        "Test label 1",
        "Test label 2",
        "Test label 3",
        "Test label 4",
        "Test label 5",
        "Test label 6",
    };
}

4. Drag random Item from the middle to last position in the list

Link to public reproduction project repository

No response

Version with bug

7.0.96

Is this a regression from previous behavior?

Not sure, did not test other versions

Last version that worked well

Unknown/Other

Affected platforms

Android

Affected platform versions

No response

Did you find any workaround?

No response

Relevant log output

No response

[ghost]

We've added this issue to our backlog, and we will work to address it as time and resources allow. If you have any additional information or questions about this issue, please leave a comment. For additional info about issue management, please read our Triage Process.

[XamlTest]

Verified this on Visual Studio Enterprise 17.8.0 Preview 4.0(8.0.0-rc.2.9373). Repro on Android 13.0-API33, not repro on iOS 16.4 with below Project:
18227.zip

[vitalii-vov]

Duplicate of #17823
The problem is that on Android, if you add an element to the list header, the index of the list increases by 1.
I did a PR #17825 about this.