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.

Comienza revisando los puntos de entrada de setTimeout y setInterval y los cambios vinculados en los PRs 48633 y 58467. Confirma cómo expone actualmente Timeout Symbol.dispose e identifica las expectativas de compatibilidad para los temporizadores del navegador; el trabajo se considera terminado cuando se elimine esa integración y se preserve el comportamiento existente de los temporizadores.