Remove `Symbol.dispose` integration in `setTimeout` and `setInterval`

As part of the [Symbol.dispose] integration, the Timeout return type of setTimeout and setInterval support disposing (https://github.com/nodejs/node/pull/48633). This was stabilized last week (https://github.com/nodejs/node/pull/58467).

I think this integration should be removed, as the web platform setTimeout / setInterval do not support Symbol.dispose and never can, because it returns a number.

This means that folks may start writing new code that is incompatible between browser and Node, just because they use the Symbol.dispose integration here. That would be unfortunate.

It would also cause one more incompatibility between server side platforms with web setTimeout, and Node setTimeout (e.g Cloudflare Workers) (cc @jasnell).

@mcollina said in person that this was made stable recently enough to still remove it.

Commencez par examiner les points d’entrée de setTimeout et setInterval ainsi que les changements associés dans les PRs 48633 et 58467. Confirmez comment Timeout expose actuellement Symbol.dispose et identifiez les attentes de compatibilité pour les minuteurs des navigateurs ; le travail est terminé lorsque cette intégration est supprimée tout en préservant le comportement actuel des minuteurs.