Repro: https://codesandbox.io/s/fast-water-4i4jb

Notice the flash. I'd expect `suspended` to be `true` during the high pri render.
setIsRendering(false);
  } else {
    nextChildren = renderWithHooks(
      current,
      workInProgress,
      render,
      nextProps,
      ref,
      renderExpirationTime,
    );
  }
  if (current !== null && !didReceiveUpdate) {
    bailoutHooks(current, workInProgress, renderExpirationTime);
    return bailoutOnAlreadyFinishedWork(
      current,
      workInProgress,
      renderExpirationTime,
    );
  }
  
  workInProgress.effectTag |= PerformedWork;
  reconcileChildren(
    current,
    workInProgress,
    nextChildren,
    renderExpirationTime,
  );
  return workInProgress.child;
}
function updateMemoComponent(