[lens][embeddable] Custom lens component does not reload when lastReloadRequestTime changes

[nreese]

The embeddable mechanism for triggering reloads is the PublishesReload interface.

The custom lens renderer component parentApi should implement PublishesReload interface. reload$ should emit when lastReloadRequestTime changes

const reload$ = useMemo(() => {
  return new Subject<void>();
}, []);

useEffect(() => {
  reload$.next();
}, [props.lastReloadRequestTime]);

return (
    <ReactEmbeddableRenderer<LensSerializedState, LensRuntimeState, LensApi>
      // all the other props
      getParentApi(() => {
        // all the other stuff
        reload$,
      })
    />
  );

[elasticmachine]

Pinging @elastic/kibana-visualizations (Team:Visualizations)