Update docs to MSW 2.0 | rest import discontinued and replaced by http instead (#4607)

Author: Benluv

docs/package.json

@@ -3,7 +3,7 @@
   "devDependencies": {
     "@reduxjs/toolkit": "^1.9.0",
     "@testing-library/react": "^13.4.0",
-    "msw": "^0.49.2",
+    "msw": "^2.0.0",
     "react": "^18.2.0",
     "react-redux": "^8.0.5"
   }

docs/usage/WritingTests.mdx

@@ -581,7 +581,7 @@ export default function UserDisplay() {
 }
 // file: features/users/tests/UserDisplay.test.tsx
 import React from 'react'
-import { rest } from 'msw'
+import { http, HttpResponse, delay } from 'msw'
 import { setupServer } from 'msw/node'
 import { fireEvent, screen } from '@testing-library/react'
 // We're using our own custom render function and not RTL's render.
@@ -592,8 +592,9 @@ import UserDisplay from '../UserDisplay'
 // and return the response 'John Smith' after 150ms
 // when receiving a get request to the `/api/user` endpoint
 export const handlers = [
-  rest.get('/api/user', (req, res, ctx) => {
-    return res(ctx.json('John Smith'), ctx.delay(150))
+  http.get('/api/user', async () => {
+      await delay(150)
+      return HttpResponse.json('John Smith')
   })
 ]