[Net10] CV2 - Disable scrolling and bouncing when empty view is shown

[kubaflo]

Note

Are you waiting for the changes in this PR to be merged?
It would be very helpful if you could test the resulting artifacts from this PR and let us know in a comment if this change resolves your issue. Thank you!

Description of Change

Introduces logic to store and temporarily disable scroll and bounce behaviors on the CollectionView when the empty view is displayed, preventing visual glitches. Restores the original settings when the empty view is removed.

Before	After
Untitled.mov	Screen.Recording.2025-10-12.at.15.54.56.mov

Issues Fixed

Fixes #31960

<Grid RowDefinitions="auto,200">
    <Button Text="Modify ItemsSource"
            Clicked="OnModifyItemsSourceClicked"
            HorizontalOptions="Center"
            VerticalOptions="Center"
            Grid.Row="0"/>
    <CollectionView
        Grid.Row="1"
        BackgroundColor="Red"
        x:Name="collectionView"
        WidthRequest="200"
        VerticalScrollBarVisibility="Always">
        <CollectionView.EmptyView>
            <Grid BackgroundColor="Green">
                <Label  Text="Empty CollectionView"/>
            </Grid>
        </CollectionView.EmptyView>
    </CollectionView>
</Grid>

[dotnet-policy-service]

Hey there @@kubaflo! Thank you so much for your PR! Someone from the team will get assigned to your PR shortly and we'll get it reviewed.

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[rmarinho]

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