chore(examples): update react-storybook example to storybook v8

[shilman]

Description

This PR updates examples/react-storybook to Storybook v8.

The current example uses v6, and Storybook has progressed a lot since then. With respect to testing, the package @storybook/testing-react has been deprecated and the functionality has been moved to @storybook/react and dramatically improved.

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Tests

• Run the tests with pnpm test:ci.

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[sheremet-va]

Thank you! We do need to go through examples and remove some of them.

[hi-ogawa]

react v17 and react-query v3 (the latest would be @tanstack/react-query v5) are probably old for a modern app. If it's not too much change, then it would be great to upgrade them too.

[shilman]

Thanks @sheremet-va ! We've done a lot of work to make Storybook stories more compatible with Vitest, and will hopefully have a small documentation PR coming your way soon.

Thanks @hi-ogawa -- good spot, I'll try to upgrade those too.

Will try to get this PR over the line in the next week or so. Thanks for your patience and for building such a wonderful tool! 🙏

[sheremet-va]

We removed some duplicate examples including react-storybook.