Function DataEmptyState

DataEmptyState(
    __namedParameters: {
        action?: ReactNode;
        banner?: ReactNode;
        children?: ReactNode;
        className?: string;
        description?: ReactNode;
        icon?: ReactNode;
        mock?: ReactNode;
        secondaryAction?: ReactNode;
        title: string;
    },
): Element
Empty-state surface with two layouts:
- Plain (no mock): a centered icon / title / description / actions column — the lightweight "nothing here yet" message.
- Showcase (mock set): the mock renders as a static, faded-out ghost of what the surface WILL look like, with the message floating over it on a frosted card — so the empty view sells the feature instead of showing a bare sentence. The mock is decorative (aria-hidden, non-interactive); pass a STATIC skeleton (animate={false}) so it reads as "nothing here", not "loading".
banner renders full-width below either layout — the slot for a follow-up strip (e.g. an upsell or hint card) that shouldn't compete with the message.
Parameters
- __namedParameters: {
      action?: ReactNode;
      banner?: ReactNode;
      children?: ReactNode;
      className?: string;
      description?: ReactNode;
      icon?: ReactNode;
      mock?: ReactNode;
      secondaryAction?: ReactNode;
      title: string;
  }
  - Optionalaction?: ReactNode
    Primary CTA (e.g. a
  - Optionalbanner?: ReactNode
    Full-width strip below the empty state (e.g. an upsell card).
  - Optionalchildren?: ReactNode
    Extra content below the actions (e.g. suggestion chips).
  - OptionalclassName?: string
  - Optionaldescription?: ReactNode
  - Optionalicon?: ReactNode
  - Optionalmock?: ReactNode
    Static ghost preview rendered behind the floating message card.
  - OptionalsecondaryAction?: ReactNode
    Optional secondary CTA shown next to the primary.
  - title: string
Returns Element
- Defined in ui/src/feedback/data-empty-state.tsx:23