Fix up egregious linting errors

Author: patch0

src/components/AstroPiModel/AstroPiControls/Stopwatch.test.js

@@ -2,6 +2,7 @@ import React from "react";
 import { render } from "@testing-library/react"
 import { Provider } from 'react-redux';
 import configureStore from 'redux-mock-store';
+import Sk from 'skulpt';
 import Stopwatch from "./Stopwatch";
 
 const middlewares = []

src/components/AstroPiModel/AstroPiModel.test.js

@@ -3,6 +3,7 @@ import { fireEvent, render } from "@testing-library/react"
 import { Provider } from 'react-redux';
 import AstroPiModel from "./AstroPiModel";
 import configureStore from 'redux-mock-store';
+import Sk from 'skulpt';
 
 let container;
 let store;

src/components/Editor/Runners/PythonRunner/PythonRunner.test.js

@@ -77,7 +77,7 @@ test("Input box not there when input function not called", () => {
 
 })
 
-describe("Testing basic input span functionality", () => {
+describe("Testing stopping the code run", () => {
   let store;
   beforeEach(() => {
     const middlewares = []

src/setupTests.js

@@ -3,7 +3,10 @@
 // expect(element).toHaveTextContent(/react/i)
 // learn more: https://github.com/testing-library/jest-dom
 import '@testing-library/jest-dom';
+
+/* global globalThis */
 globalThis.IS_REACT_ACT_ENVIRONMENT = true;
+
 window.matchMedia = (query) => ({
   matches: false,
   media: query,