[Selection list] Aria-selected is not changing the state, is always false

[kolaps33]

Bug Report

Steps

Testing with reader require to open it in Edge/Narrator.

1. Navigate to the selection list item
2. press down arrow key to move to another list item
3. press down arrow key to move to another list item
4. observe aria-selected attribute or listen Narrator.

Expected Result

aria-selected should change state with selected item

Actual Result

aria-selected doesn't change state based on selected item
reader doesn't narrate proper selected state

Version

latest master, before version is v0.11.0

Testcase

[levithomason]

Confirmed. It appears the aria prop is also not updated on click. We need to update the accessibility behavior to set aria selected based on the item's active prop.

😕 Womp, actually we don't even have a list item active prop. Let's add that first...