[🔥AUDIT🔥] [fixwstesting] Remove the need for the jest wrappers (#872)

🖍 _This is an audit!_ 🖍

## Summary:
Turned out importing `@jest/globals` was bad, and also unnecessary. It was causing jest to throw an error when I tried updating Wonder Blocks. This should fix that.

Issue: XXX-XXXX

## Test plan:
`yarn test` here and then I'll incorporate the updated release into Wonder Blocks and all should be well.

Author: somewhatabstract

Auditors: #frontend-infra-web, #frontend-infra

Required Reviewers:

Approved By:

Checks: ⌛ Lint, typecheck, and coverage check (ubuntu-latest, 16.x), ✅ Prime node_modules cache for primary configuration (ubuntu-latest, 16.x), ⌛ Analyze (javascript), ✅ gerald, ⏭  dependabot

Pull Request URL: #872

.changeset/calm-crews-lay.md

@@ -0,0 +1,5 @@
+---
+"@khanacademy/wonder-stuff-testing": patch
+---
+
+Fix Wonder Stuff Testing to work with jest again

packages/wonder-stuff-testing/src/jest/__tests__/after-each-restore-env.test.ts

@@ -1,5 +1,3 @@
-import * as JestWrappers from "../internal/jest-wrappers";
-
 import {afterEachRestoreEnv} from "../after-each-restore-env";
 
 jest.mock("../internal/jest-wrappers");
@@ -43,7 +41,7 @@ describe("#afterEachRestoreEnv", () => {
     it("should register an afterEach callback", () => {
         // Arrange
         const afterEachSpy = jest
-            .spyOn(JestWrappers, "afterEach")
+            .spyOn(global, "afterEach")
             .mockImplementationOnce(() => {});
 
         // Act
@@ -57,7 +55,7 @@ describe("#afterEachRestoreEnv", () => {
         it("should restore changed environment variables to their original values", () => {
             // Arrange
             const afterEachSpy = jest
-                .spyOn(JestWrappers, "afterEach")
+                .spyOn(global, "afterEach")
                 .mockImplementationOnce(() => {});
 
             // Make sure the env vars exist.
@@ -82,7 +80,7 @@ describe("#afterEachRestoreEnv", () => {
         it("should delete environment variables that were not set before", () => {
             // Arrange
             const afterEachSpy = jest
-                .spyOn(JestWrappers, "afterEach")
+                .spyOn(global, "afterEach")
                 .mockImplementationOnce(() => {});
 
             // Make sure the env vars don't exist.
@@ -107,7 +105,7 @@ describe("#afterEachRestoreEnv", () => {
         it("should only restore the variables it was asked to restore", () => {
             // Arrange
             const afterEachSpy = jest
-                .spyOn(JestWrappers, "afterEach")
+                .spyOn(global, "afterEach")
                 .mockImplementationOnce(() => {});
 
             // Make sure the env vars don't exist or exist as we want.

packages/wonder-stuff-testing/src/jest/after-each-restore-env.ts

@@ -1,5 +1,3 @@
-import {afterEach} from "./internal/jest-wrappers";
-
 /**
  * Restore the values of the given environment variables after each test.
  *