Fixed tests

Author: Rajat

apps/web/jest.client.config.ts

@@ -28,6 +28,11 @@ const config = {
     globalSetup: "<rootDir>/jest.setup.ts",
     globalTeardown: "<rootDir>/jest.teardown.ts",
     moduleNameMapper: {
+        // Ensure a single React instance is used in tests to avoid
+        // "A React Element from an older version of React was rendered" errors
+        "^react$": "<rootDir>/node_modules/react",
+        "^react-dom$": "<rootDir>/node_modules/react-dom",
+        "^react/jsx-runtime$": "<rootDir>/node_modules/react/jsx-runtime.js",
         "next-auth": "<rootDir>/__mocks__/next-auth.ts",
         "@courselit/utils": "<rootDir>/../../packages/utils/src",
         "@courselit/common-logic": "<rootDir>/../../packages/common-logic/src",