Italic text gets clipped

[gerhard17]

Describe the bug

The bounding size of italic text is calculated wrong.

In this example with Avalonia.Fonts.Inter all italic text has a display problem:

To Reproduce

<TextBlock Text="clipped" Background="#442211" VerticalAlignment="Center"/>
<TextBlock Text="clipped" Background="#442211" VerticalAlignment="Center" FontStyle="Italic"/>
<TextBlock Text="clipped" Width="60" TextAlignment="Right" Background="#442211" VerticalAlignment="Center"/>
<TextBlock Text="clipped" Width="60" TextAlignment="Right" Background="#442211" VerticalAlignment="Center" FontStyle="Italic"/>

The same problem arises if you exchange the TextBlock with a TextBox.

Expected behavior

Italic text is proper clipped.

Avalonia version

Was is 11.x and still exists in 12.x

OS

Windows

Additional context

No response

[gerhard17]

There exists an old closed issue #6767 which looks very similar.