Documentation should state that React preserves setState callback this context

I just recently found out that setState's callback calls with the correct this context per this line in the React source. Nowhere in the documentation is it stated that React internally calls callbacks with context. This should be made clear as many assume it doesn't, leading to unnecessary measures such as arrow functions, explicit binding, etc.

The lack of explicit documentation also creates confusion with other things that do require binding, such as traditional class methods used as event handlers.

Comienza con la línea referenciada de ReactFiberUpdateQueue.js para confirmar cómo reciben contexto los callbacks de setState y, a continuación, localiza la documentación de los callbacks de setState en la documentación de React. Actualiza la guía para indicar el contexto this del callback y distinguirlo de los métodos de clase utilizados como controladores de eventos.