refactor: mark jest-environment-jsdom as peer dependency

BREAKING CHANGE

- `jsdom` dep is now mandatory peer dependency. Users are required to install `jsdom` explicitly
- `jest-environment-jsdom` is now mandatory dependency. Users are required to install `jest-environment-jsdom` explicitly

Author: ahnpnl

examples/example-app-monorepo/package.json

@@ -35,6 +35,7 @@
     "@types/jest": "^30.0.0",
     "@types/node": "^22.16.5",
     "jest": "^30.0.5",
+    "jest-environment-jsdom": "^30.0.4",
     "jest-preset-angular": "^14.6.1",
     "ng-packagr": "^20.1.0",
     "ts-jest": "^29.4.0",