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 ((current.flags & fiberFlags) !== NoFlags) {
        invokeEffectFn(current);
      }
      if (current.sibling !== null) {
        current = current.sibling;
      } else {
        current = subtreeRoot = current.return;
      }
    }
  }
}
let didWarnStateUpdateForNotYetMountedComponent: Set<string> | null = null;
export function warnAboutUpdateOnNotYetMountedFiberInDEV(fiber: Fiber) {
  if (__DEV__) {
    if ((executionContext & RenderContext) !== NoContext) {
       We 
      return;
    }
    if (!(fiber.mode & ConcurrentMode)) {
      return;
    }
    const tag = fiber.tag;
    if (
      tag !== IndeterminateComponent &&
      tag !== HostRoot &&
      tag !== ClassComponent &&
      tag !== FunctionComponent &&
      tag !== ForwardRef &&
      tag !== MemoComponent &&
      tag !== SimpleMemoComponent