If you have `memo(forwardRef(X))`, then the inner component won't have a "rendered by" list. This is because it technically doesn't have an owner. It is artificial.

I think we should ideally set up `_debugOwner` for these Fibers in DEV just so existing tooling can find them. Or special case them in DevTools.
);
  
  
  fallbackChildFragment.effectTag |= Placement;
  primaryChildFragment.return = workInProgress;
  fallbackChildFragment.return = workInProgress;
  primaryChildFragment.sibling = fallbackChildFragment;
  workInProgress.child = primaryChildFragment;
  if ((workInProgress.mode & BlockingMode) !== NoMode) {
    
    
    reconcileChildFibers(workInProgress, current.child, null, renderLanes);
  }
  return fallbackChildFragment;
}
function mountDehydratedSuspenseComponent(
  workInProgress: Fiber,
  suspenseInstance: SuspenseInstance,
  renderLanes: Lanes,
): null | Fiber {
  
  
  if ((workInProgress.mode & BlockingMode) === NoMode) {
    if (__DEV__) {
      console.error(
        'Cannot hydrate Suspense in legacy mode. Switch from ' +
          'ReactDOM.hydrate(element, container) to ' +
          'ReactDOM.createBlockingRoot(container, { hydrate: true })' +
          '.render(element) or remove the Suspense components from ' +
          'the server rendered components.',