ComboboxControl: the Reset button doesn't work when using the keyboard

[afercia]

Description

Discovered while testing the 'Parent' setting for a post of type page.

Can be reproduced on the storybook as well, by enabling the allowReset prop.

When using the keyboard, pressing the Enter key on the optional Reset button doesn not reset the combobox. Pressing the Spacebar key does work.

Turns out when pressing the Enter key, the keydown event attached on the container div element fires and actually sets the currently selected suggestion.

Step-by-step reproduction instructions

• Edit a page and use the Parent setting with the keyboard.
• Alternatively, test on the storybook, make sure the allowReset prop is set to true: https://wordpress.github.io/gutenberg/?path=/story/components-comboboxcontrol--default&args=allowReset:!true
• Select a suggestion.
• Click the reset button with your mouse.
• The combobox is reset.
• I would expect the same behavior when using the keyboard.
• Select a suggestion.
• Move focus to the Reset button.
• Press the Spacebar key and observe it does reset the combobox.
• Repeat, but this time press the Enter key and observe it does not reset the comobox.

Screenshots, screen recording, code snippet

No response

Environment info

No response

Please confirm that you have searched existing issues in the repo.

Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

Yes