Fix Clip ContentPresenter, TemplatedControl, and ExperimentalAcrylicBorder to rounded bounds

[zrt2399]

What does the pull request do?

Adds rounded ClipToBounds behavior to all controls with a CornerRadiusProperty, including ContentPresenter, TemplatedControl, and ExperimentalAcrylicBorder, keeping their behavior consistent with the existing Border implementation.

What is the current behavior?

    <StackPanel Margin="20" Spacing="20">
        <ContentControl ClipToBounds="True" CornerRadius="20">
            <Rectangle Height="20" Fill="Blue" />
        </ContentControl>
        <ContentPresenter ClipToBounds="True" CornerRadius="20">
            <ContentPresenter.Content>
                <Rectangle Height="20" Fill="Blue" />
            </ContentPresenter.Content>
        </ContentPresenter>
        <Border ClipToBounds="True" CornerRadius="20">
            <Rectangle Height="20" Fill="Blue" />
        </Border>
        <ExperimentalAcrylicBorder ClipToBounds="True" CornerRadius="20">
            <Rectangle Height="20" Fill="Blue" />
        </ExperimentalAcrylicBorder>
    </StackPanel>

What is the updated/expected behavior with this PR?

Checklist

• Added unit tests (if possible)?
• Added XML documentation to any related classes?
• Consider submitting a PR to https://github.com/AvaloniaUI/avalonia-docs with user documentation

Fixed issues

Fixes #21998

[avaloniaui-bot]

You can test this PR using the following package version. 12.2.999-cibuild0068477-alpha. (feed url: https://nuget-feed-all.avaloniaui.net/v3/index.json) [PRBUILDID]