ebay-listbox-button: unselect current selection

[andrewdowis]

Description

For parity with native, users should be able to de-select a selected item from the dropdown. For example, in a menu with options A, B, C ...

• User selects A
• Menu closes
• User opens menu, A is selected
• User clicks "A" again
• • current behavior: nothing happens, dropdown stays open
• • desired outcome: option A is unselected, as if the user never clicked any options at all. Menu closes.

https://opensource.ebay.com/evo-web/ebayui-core/?path=/docs/buttons-ebay-listbox-button--documentation

Screenshots

Figma link

https://www.figma.com/design/Apbzbvsv370cdY9IcezKYm/Salvage-parts-Condition-Grading-%7C-Working---Hand-off?node-id=5293-164340&m=dev

Engineering pre-requisites

• Supports dark mode.
• Supports responsive design.
• Tokens have been provided (or already exist).