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
if (resumableNode === undefined) {
        resumableNode = [
          keyPath[1],
          keyPath[2],
          ([]: Array<ReplayNode>),
          segment.id,
        ];
        addToReplayParent(resumableNode, keyPath[0], trackedPostpones);
      } else {
        resumableNode[3] = segment.id;
      }
    }
  } else {
    let slots;
    if (keyPath === null) {
      slots = trackedPostpones.rootSlots;
      if (slots === null) {
        slots = trackedPostpones.rootSlots = ({}: {[index: number]: number});
      } else if (typeof slots === 'number') {
        throw new Error(
          'It should not be possible to postpone both at the root of an element ' +
            'as well as a slot below. This is a bug in React.',
        );
      }
    } else {
      const workingMap = trackedPostpones.workingMap;
      let resumableNode = workingMap.get(keyPath);
      if (resumableNode === undefined) {
        slots = ({}: {[index: number]: number});
        resumableNode = ([