setTimeout(() => {  console.log(0)})new Promise(resolve => {  resolve(1)  Promise.resolve().then(t => {    console.log(2)  })  console.log(3)}).then(t => {  console.log(t)})console.log(4)為什么是先輸出 2 再輸出 1？而不是先1再2？求大佬解答，感激不盡！