Keyboard interaction: have up and down arrows change selection when dropdown is collapsed

[geoffrich]

Is your feature request related to a problem? Please describe.

With a native <select>, I can change the selected option by focusing the select and hitting the up and down arrows, even if the select is collapsed. I do this frequently with selects and it's an expected interaction for me.

Describe the solution you'd like

<auro-select> should support the same interaction.

Describe alternatives you've considered

n/a

Additional context

GIF of interaction in a regular <select> (from MDN)

[blackfalcon]

this issue is being discussed here

• Feature Request - TAB acts as Selecting WC-Generator#453