This DEV-only field was added in 836331ba5f69f2cc53b273ec073fae116db14302 by @sebmarkbage but it's not being used anymore to my knowledge.
workInProgress.lanes = laneToLanes(DefaultHydrationLane);
  } else {
    
    
    workInProgress.lanes = laneToLanes(OffscreenLane);
  }
  return null;
}
function updateDehydratedSuspenseComponent(
  current: Fiber,
  workInProgress: Fiber,
  suspenseInstance: SuspenseInstance,
  suspenseState: SuspenseState,
  renderLanes: Lanes,
): null | Fiber {
  
  
  warnIfHydrating();
  if ((getExecutionContext() & RetryAfterError) !== NoContext) {
    return retrySuspenseComponentWithoutHydrating(
      current,
      workInProgress,
      renderLanes,
    );
  }