We currently translate OpenChangeReason from Floating UI, but:

1. We don't consider Base UI specific reasons, like menu item click.
2. trigger-press vs. click is confusing in the Base UI API as one refers to useDismiss hook vs. the useClick hook internally, but open: false is possible with both reasons and it's not clear why they're differentiated.

We currently either expose one of the following strings, or just skip it with undefined, but should instead provide more useful reasons:

export type OpenChangeReason =
  | 'click'
  | 'hover'
  | 'focus'
  | 'focus-out'
  | 'escape-key'
  | 'outside-press'
  | 'trigger-press';