[React 19] Upgrading React causes infinite refetching

## Summary The reproduction is using Relay, but I came as this seems closer to a bug in React than Relay. https://stackblitz.com/@cometkim/collections/react-relay-suspend-loop With this basic setup, using `useLazyLoadQuery` with `network-only` to make a new `fetch()` call on render. The code works fine in v18, but after upgrading to v19, it starts remounting an element infinitely. - [React v18](https://stackblitz.com/edit/vitejs-vite-ingwz7?file=src%2Fmain.tsx): No issues - [React v19](https://stackblitz.com/edit/vitejs-vite-ezhrrp?file=src%2Fmain.tsx): No differences, but the children including the suspense boundary is unexpectedly unmounted, resulting in an infinite refetch loop. - [React v19 workaround 1](https://stackblitz.com/edit/vitejs-vite-jqbsjc?file=src%2Fmain.tsx): Removing `<StrictMode>` seems to solve the issue. - [React v19 workaround 2](https://stackblitz.com/edit/vitejs-vite-56sxrz?file=src%2Fmain.tsx): Wrap the parent (which is just a context provider with nothing special) by one more `<Suspense>` boundary. It seems to do not make sense, but it works. The expected behavior is that the `<Suspense>` boundary is retained stable, and the `<NetworkOnly>` is rendered after waiting for the QueryResource fulfilled. However, this seems to me like the `<Suspense>` could suspend itself.