[Suggestion]: Make clear why Ref was used in the third solution

Summary

The solution for the third challenge, "Fix debouncing," does not require a Ref. Moving the let timeoutID; to the top inside the DebouncedButton component will fix the debouncing. Either point this out in the explanation or make it re-render so the solution requires Ref.

Page

https://react.dev/learn/referencing-values-with-refs

Details

Since code example does not use State, there's no re-rendering, and so there's no need to use Ref to remember anything across re-renders. The page mentions that Refs are not used often; although future-proof, I think the example should only use Ref when necessary.

Commencez par la page « Referencing Values with Refs » et examinez le troisième défi, « Fix debouncing », y compris son explication et sa solution. C’est terminé lorsque la documentation explique pourquoi Ref est utilisé, ou lorsque l’exemple est modifié de manière à ce qu’un nouveau rendu rende Ref nécessaire ; vérifiez la page rendue et la formulation du défi.