perf: lazyload the edge runtime in NextServer (vercel#41322)

## Context

I'm investigating cold boot perf

## This PR

Did some manual analysis on next cold boot for the "regular" node target
and found out that we are spending a good 10ms evaluating the edge
runtime module when we shouldn't be in most cases.

This is a quick fix to only load it when actually required.

## Test plan

I have a simple script which I'll push in a separate PR to measure the
cold boot.

Results:


before:
<img width="230" alt="image"
src="https://user-images.githubusercontent.com/11064311/195073994-c3d28961-5d22-401f-a4b0-026c791ff2bd.png">

after:
<img width="275" alt="image"
src="https://user-images.githubusercontent.com/11064311/195073941-a0897532-6e9f-482d-a1f0-8b9c9231c6b0.png">

it appears to be a 10~15ms win on cold boot 

## Following up

We probably want a separate NextMinimalServer type of build?

## Bug

- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Errors have a helpful link attached, see `contributing.md`

## Feature

- [ ] Implements an existing feature request or RFC. Make sure the
feature request has been accepted for implementation before opening a
PR.
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Documentation added
- [ ] Telemetry added. In case of a feature if it's used or not.
- [ ] Errors have a helpful link attached, see `contributing.md`

## Documentation / Examples

- [ ] Make sure the linting passes by running `pnpm lint`
- [ ] The "examples guidelines" are followed from [our contributing
doc](https://github.com/vercel/next.js/blob/canary/contributing/examples/adding-examples.md)

packages/next/server/next-server.ts

@@ -54,7 +54,7 @@ import HttpProxy from 'next/dist/compiled/http-proxy'
 import { getPathMatch } from '../shared/lib/router/utils/path-match'
 import { createHeaderRoute, createRedirectRoute } from './server-route-utils'
 import getRouteFromAssetPath from '../shared/lib/router/utils/get-route-from-asset-path'
-import { run } from './web/sandbox'
+
 import { detectDomainLocale } from '../shared/lib/i18n/detect-domain-locale'
 
 import { NodeNextRequest, NodeNextResponse } from './base-http/node'
@@ -68,7 +68,6 @@ import { ParsedUrl, parseUrl } from '../shared/lib/router/utils/parse-url'
 import { parse as nodeParseUrl } from 'url'
 import * as Log from '../build/output/log'
 import loadRequireHook from '../build/webpack/require-hook'
-import { consumeUint8ArrayReadableStream } from 'next/dist/compiled/edge-runtime'
 
 import BaseServer, {
   Options,
@@ -1766,6 +1765,7 @@ export default class NextNodeServer extends BaseServer {
     }
 
     const method = (params.request.method || 'GET').toUpperCase()
+    const { run } = require('./web/sandbox') as typeof import('./web/sandbox')
 
     const result = await run({
       distDir: this.distDir,
@@ -2089,6 +2089,7 @@ export default class NextNodeServer extends BaseServer {
       )
     }
 
+    const { run } = require('./web/sandbox') as typeof import('./web/sandbox')
     const result = await run({
       distDir: this.distDir,
       name: edgeInfo.name,
@@ -2129,6 +2130,8 @@ export default class NextNodeServer extends BaseServer {
     if (result.response.body) {
       // TODO(gal): not sure that we always need to stream
       const nodeResStream = (params.res as NodeNextResponse).originalResponse
+      const { consumeUint8ArrayReadableStream } =
+        require('next/dist/compiled/edge-runtime') as typeof import('next/dist/compiled/edge-runtime')
       try {
         for await (const chunk of consumeUint8ArrayReadableStream(
           result.response.body