Actually fix Radix menus in React example (#3458)

Author: steveluscher

examples/react-app/package.json

@@ -13,9 +13,9 @@
         "test:typecheck": "tsc"
     },
     "dependencies": {
-        "@radix-ui/react-dropdown-menu": "^2.1.2",
-        "@radix-ui/react-icons": "^1.3.0",
-        "@radix-ui/themes": "^3.1.4",
+        "@radix-ui/react-dropdown-menu": "2.1.1",
+        "@radix-ui/react-icons": "1.3.0",
+        "@radix-ui/themes": "3.1.4",
         "@solana-program/system": "^0.5.4",
         "@solana/react": "workspace:*",
         "@solana/web3.js": "workspace:*",