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
{'end'}
        </div>,
      );
      await act(() => {
        resolveText('second suspended');
      });
      expect(
        stripExternalRuntimeInNodes(
          container.children,
          renderOptions.unstable_externalRuntimeSrc,
        )[0].outerHTML,
      ).toEqual(
        '<div id="app-div">start<!--$-->firststartfirst suspendedfirstend<!--/$--><!--$-->secondstart<b>second suspended</b><!--/$-->end</div>',
      );
      await waitForAll([]);
      expect(errors).toEqual([]);
      expect(getVisibleChildren(container)).toEqual(
        <div id="app-div">
          {'start'}
          {'firststart'}
          {'first suspended'}
          {'firstend'}
          {'secondstart'}
          <b>second suspended</b>
          {'end'}
        </div>,
      );
    });
    it('(only) includes extraneous text separators in segments that complete before flushing, followed by nothing or a non-Text node', async () => {
      function App() {