React version: 18.3.0-next-3ba7add60-20221201

Hard to reproduce.

In Next.js, in rare cases, and only after a fast refresh, the ref object when using forwardRef is simply `{}`.

This leads to the `TypeError: can't define property "current": Object is not extensible` error when used with `useImperativeHandle`.

```tsx
function Parent() {
  const carouselRef = useRef<any>();

  return <Suspense><Carousel ref={carouselRef} /></Suspense>
}

const Carousel = forwardRef((props, ref) => {
  if (!('current' in ref)) { debugger; }
  const thing = use(aPromise);
  return ...;
});
```

![Screenshot 2023-03-17 at 18 49 21](https://user-images.githubusercontent.com/5406212/225981809-22f575fa-0ec7-4f94-ae23-bffc8bf7c4dd.png)

In `updateImperativeHandle`, the ref is already an empty object.

![Screenshot 2023-03-17 at 19 13 13](https://user-images.githubusercontent.com/5406212/225985622-b8512a61-3a6b-4958-b63f-277219d4c816.png)

I haven't investigated it further yet, the stacktraces are quite hard to follow.
}
    if (showFallback) {
      pushFallbackTreeSuspenseHandler(workInProgress);
      const nextFallbackChildren = nextProps.fallback;
      const nextPrimaryChildren = nextProps.children;
      const fallbackChildFragment = updateSuspenseFallbackChildren(
        current,
        workInProgress,
        nextPrimaryChildren,
        nextFallbackChildren,
        renderLanes,
      );
      const primaryChildFragment: Fiber = (workInProgress.child: any);
      const prevOffscreenState: OffscreenState | null = (current.child: any)
        .memoizedState;
      primaryChildFragment.memoizedState =
        prevOffscreenState === null
          ? mountSuspenseOffscreenState(renderLanes)
          : updateSuspenseOffscreenState(prevOffscreenState, renderLanes);
      if (enableTransitionTracing) {
        const currentTransitions = getPendingTransitions();
        if (currentTransitions !== null) {
          const parentMarkerInstances = getMarkerInstances();
          const offscreenQueue: OffscreenQueue | null =
            (primaryChildFragment.updateQueue: any);
          const currentOffscreenQueue: OffscreenQueue | null =
            (current.updateQueue: any);
          if (offscreenQueue === null) {
            const newOffscreenQueue: OffscreenQueue = {
              transitions: currentTransitions,