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
false,
    false,
  );
  parentSegment.children.push(boundarySegment);
   The parentSegment has a child Segment at this index so we reset the lastPushedText marker on the parent
  parentSegment.lastPushedText = false;
   This segment is the actual child content. We can start rendering that immediately.
  const contentRootSegment = createPendingSegment(
    request,
    0,
    null,
    task.formatContext,
     boundaries never require text embedding at their edges because comment nodes bound them
    false,
    false,
  );
   We mark the root segment as having its parent flushed. It's not really flushed but there is
   no parent segment so there's nothing to wait on.
  contentRootSegment.parentFlushed = true;
   Currently this is running synchronously. We could instead schedule this to pingedTasks.
   I suspect that there might be some efficiency benefits from not creating the suspended task
   and instead just using the stack if possible.
   TODO: Call this directly instead of messing with saving and restoring contexts.
  
   context switching. We just need to temporarily switch which boundary and which segment
  
  task.blockedBoundary = newBoundary;
  task.blockedSegment = contentRootSegment;
  if (enableFloat) {
    setCurrentlyRenderingBoundaryResourcesTarget(