As reported in https://github.com/vercel/next.js/issues/56919 it is possible for the ReadableStream controller to be written to after it is already closed. This is because inside an async context a Float method such as `ReactDOM.preload()` can attempt to flush newly created Resources even after the stream has completed.

React version: 

The underlying bug has been in React since Float landed. The expression of the Bug as reported in the Next.js repo was landed in: https://github.com/facebook/react/commit/701ac2e57290f913502c6012c15e815f412f84b7
The first Canary release to have this new expression was: [18.3.0-canary-f81c0f1ed-20230927](https://www.npmjs.com/package/react-dom/v/18.3.0-canary-f81c0f1ed-20230927)


## Steps To Reproduce

1. use `react-dom/server.edge`
2. Ensure the environment supports AsyncLocalStorage
3. Call Float method like `ReactDOM.preload(...)` after an await after the stream has closed

## The current behavior
If the conditions are right the Float call will initiate a write after the stream has closed and there will be a thrown exception

## The expected behavior
The Float call is ignored after the stream has closed. There are no errors
task.context,
    task.treeContext,
  );
  if (__DEV__) {
    suspendedFallbackTask.componentStack = task.componentStack;
  }
   TODO: This should be queued at a separate lower priority queue so that we only work
   on preparing fallbacks if we don't have any more main content to task on.
  request.pingedTasks.push(suspendedFallbackTask);
  popComponentStackInDEV(task);
}
function renderBackupSuspenseBoundary(
  request: Request,
  task: Task,
  keyPath: KeyNode,
  props: Object,
) {
  pushBuiltInComponentStackInDEV(task, 'Suspense');
  const content = props.children;
  const segment = task.blockedSegment;
  const prevKeyPath = task.keyPath;
  task.keyPath = keyPath;
  if (segment === null) {
    
    renderNode(request, task, content, -1);
  } else {
    
    pushStartCompletedSuspenseBoundary(segment.chunks);
    renderNode(request, task, content, -1);
    pushEndCompletedSuspenseBoundary(segment.chunks);