fix: useOnClickOutside RefObject<T> should also allow T to be null

[dogukanakkaya]

Also fixes: #663

[changeset-bot]

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Latest commit: 18425be

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[JCMais]

this is required for React v19 support

[FezVrasta]

This is already covered by #675

[dogukanakkaya]

Closing in favor of: #675