Parallelize `requirePage` when loading components (#29494)
Parallelize `requirePage` when loading components (#29494)

We can potentially speed it up a little bit by using `Promise.all` here. This was raised by @devknoll in https://github.com/vercel/next.js/pull/29470#pullrequestreview-766039044.
zeit/next.js,JeromeFitz/next.js,JeromeFitz/next.js,azukaru/next.js,azukaru/next.js,zeit/next.js,azukaru/next.js,JeromeFitz/next.js,JeromeFitz/next.js,zeit/next.js,azukaru/next.js