Function subscribe

packages/@ant/ink/src/components/ScrollBox.tsx:186–189

(listener: () => void)

        return el.stickyScroll ?? Boolean(el.attributes['stickyScroll']);
      },
      subscribe(listener: () => void) {
        listenersRef.current.add(listener);
        return () => listenersRef.current.delete(listener);
      },
      setClampBounds(min, max) {
        const el = domRef.current;
        if (!el) return;