[Suggestion]: Other method to fix issue rather than depending on useEffect

Summary

In Synchronizing with effects section https://react.dev/learn/synchronizing-with-effects inside learn, there's a video section where we show issues in using ref and setting play/pause methods with ref and it raises error

`function VideoPlayer({ src, isPlaying }) {
const ref = useRef(null);
if (isPlaying) {
ref.current.play(); // Calling these while rendering isn't allowed.
} else {
ref.current.pause(); // Also, this crashes.
}

return ;
}`

And below it we say way to solve this is by using useEffect

But rather we can use following way instead to solve the issue. I guess we should tell readers that this can also be possible way but here we'll see how we can solve with useEffect.

`function VideoPlayer({ src, isPlaying }) {
const ref = useRef(null);
if(ref.current !== null){
if (isPlaying) {
ref.current.play(); // Calling these while rendering isn't allowed.
} else {
ref.current.pause(); // Also, this crashes.
}
}

return ;
}`

Page

https://react.dev/learn/synchronizing-with-effects

Details

I think we should show readers this way of solving the null Ref issue. This will help them to understand different ways and correct usecase of useEffect.

Subsection URL - https://react.dev/learn/synchronizing-with-effects

Inizia dalla sezione “Synchronizing with Effects” e dal relativo esempio video nella pagina di documentazione di React collegata. Confronta l’alternativa proposta protetta da ref con la spiegazione esistente di useEffect, quindi determina se la pagina dovrebbe menzionarla. Il lavoro è completato quando la documentazione presenta accuratamente le opzioni pertinenti e i relativi casi d’uso previsti.