This DEV-only field was added in 836331ba5f69f2cc53b273ec073fae116db14302 by @sebmarkbage but it's not being used anymore to my knowledge.
renderDidSuspendDelayIfPossible();
    return retrySuspenseComponentWithoutHydrating(
      current,
      workInProgress,
      renderLanes,
    );
  } else if (isSuspenseInstancePending(suspenseInstance)) {
    
    
    
    
    
    
    
    
    
    workInProgress.flags |= DidCapture;
    
    workInProgress.child = current.child;
    
    const retry = retryDehydratedSuspenseBoundary.bind(null, current);
    registerSuspenseInstanceRetry(suspenseInstance, retry);
    return null;
  } else {