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.
currentPrimaryChildFragment.sibling;
  const primaryChildFragment = createWorkInProgressOffscreenFiber(
    currentPrimaryChildFragment,
    {
      mode: 'visible',
      children: primaryChildren,
    },
  );
  if ((workInProgress.mode & BlockingMode) === NoMode) {
    primaryChildFragment.lanes = renderLanes;
  }
  primaryChildFragment.return = workInProgress;
  primaryChildFragment.sibling = null;
  if (currentFallbackChildFragment !== null) {
    
    currentFallbackChildFragment.nextEffect = null;
    workInProgress.firstEffect = workInProgress.lastEffect = currentFallbackChildFragment;
    const deletions = workInProgress.deletions;
    if (deletions === null) {
      workInProgress.deletions = [currentFallbackChildFragment];
      
      workInProgress.effectTag |= Deletion;
    } else {
      deletions.push(currentFallbackChildFragment);
    }
  }
  workInProgress.child = primaryChildFragment;
  return primaryChildFragment;
}
function updateSuspenseFallbackChildren(