Use happy-dom over jsdom for more performant UI tests

Author: jamesrweb

package.json

@@ -106,7 +106,7 @@
     "eslint-plugin-react-compiler": "19.1.0-rc.2",
     "eslint-plugin-react-hooks": "^5.2.0",
     "gh-pages": "^6.3.0",
-    "jsdom": "^26.1.0",
+    "happy-dom": "^18.0.1",
     "p5.capture": "^1.6.0",
     "p5.record.js": "^0.2.0",
     "prettier": "^3.6.2",