fix(launcher): align react and react-dom versions (#2467)

Pin react and react-dom to 19.2.5 to avoid runtime crashes caused by a version mismatch.
Refresh the pnpm lockfile to keep frontend dependencies in sync.

web/frontend/package.json

@@ -29,8 +29,8 @@
     "i18next-browser-languagedetector": "^8.2.1",
     "jotai": "^2.19.1",
     "radix-ui": "^1.4.3",
-    "react": "^19.2.5",
-    "react-dom": "^19.2.0",
+    "react": "19.2.5",
+    "react-dom": "19.2.5",
     "react-i18next": "^17.0.2",
     "react-markdown": "^10.1.0",
     "react-textarea-autosize": "^8.5.9",