ComboBox does not loose focus after selection

[apman]

Describe the bug

When using the mouse or trackpad to make a selection from a ComboBox, it remains active and responds to scroll events even after the Popup of options has closed. (I guess this is what you'd would want for keyboard navigation, but when using a mouse it is quite unexpected and can easily lead to accidental input changes.)

To Reproduce

• Create a simple ComboBox:

   <ComboBox SelectedIndex="0">
        <ComboBoxItem>Option 1</ComboBoxItem>
        <ComboBoxItem>Option 2</ComboBoxItem>
        <ComboBoxItem>Option 3</ComboBoxItem>
        <ComboBoxItem>Option 4</ComboBoxItem>
   </ComboBox>

• Click on the ComboBox, and click again to select any option

• Move the mouse pointer back over the closed ComboBox and scroll with your mouse wheel / two fingers on trackpad

➡️ The selected option changes as you scroll:

Expected behavior

The control should no longer respond to mouse actions once the Popup has closed.

Avalonia version

11.2.3

OS

No response

Additional context

While rolling the mouse wheel over a closed control might seem contrived, small accidental scrolls can happen quite easily with devices like Apple's Magic Mouse, or in the context of a larger form where you'd make your selection and quickly scroll to the next ... (cp. #13751 which sounds like it might be related to this issue)