install @types/react and @types/react-dom in React examples

[AhmedBaset]

This PR fixes TS issue in the website

x-ref: https://github.com/TanStack/tanstack.com/blob/0f6d54ff2111bd9ab07cc28cb5f4db59fdacd9ee/app/routes/_libraries.query.%24version.index.tsx#L534

[crutchcorn]

This is awesome, thank you!

[nx-cloud]

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