fix(challenge-editor): Windows compatibility (#46617)

* fix(challenge-editor): Windows compatibility

package-lock.json

@@ -20550,7 +20550,8 @@
     },
     "node_modules/cross-env": {
       "version": "7.0.3",
-      "license": "MIT",
+      "resolved": "https://registry.npmjs.org/cross-env/-/cross-env-7.0.3.tgz",
+      "integrity": "sha512-+/HKd6EgcQCJGh2PSjZuUitQBQynKor4wrFbRg4DtAgS1aWO+gU52xpH7M9ScGgXSYmAVS9bIJ8EzuaGw0oNAw==",
       "dependencies": {
         "cross-spawn": "^7.0.1"
       },
@@ -53523,6 +53524,7 @@
       },
       "devDependencies": {
         "@types/codemirror": "5.60.5",
+        "cross-env": "7.0.3",
         "eslint-plugin-react-hooks": "4.6.0"
       }
     },
@@ -55712,6 +55714,7 @@
         "@testing-library/react": "12.1.5",
         "@testing-library/user-event": "13.5.0",
         "@types/codemirror": "5.60.5",
+        "cross-env": "7.0.3",
         "eslint-plugin-react-hooks": "4.6.0",
         "react": "16.14.0",
         "react-codemirror2": "7.2.1",
@@ -68532,6 +68535,8 @@
     },
     "cross-env": {
       "version": "7.0.3",
+      "resolved": "https://registry.npmjs.org/cross-env/-/cross-env-7.0.3.tgz",
+      "integrity": "sha512-+/HKd6EgcQCJGh2PSjZuUitQBQynKor4wrFbRg4DtAgS1aWO+gU52xpH7M9ScGgXSYmAVS9bIJ8EzuaGw0oNAw==",
       "requires": {
         "cross-spawn": "^7.0.1"
       }

tools/challenge-editor/client/package.json

@@ -14,7 +14,7 @@
     "typescript": "4.7.4"
   },
   "scripts": {
-    "start": "PORT=3300 react-scripts start",
+    "start": "cross-env PORT=3300 react-scripts start",
     "lint": "eslint src",
     "build": "react-scripts build",
     "test": "react-scripts test",
@@ -34,6 +34,7 @@
   },
   "devDependencies": {
     "@types/codemirror": "5.60.5",
+    "cross-env": "7.0.3",
     "eslint-plugin-react-hooks": "4.6.0"
   }
 }