Fix using-preact example deps (#26821)

Fix after #26133

Author: sedlukha

examples/using-preact/package.json

@@ -12,8 +12,8 @@
     "next-plugin-preact": "^3.0.3",
     "preact": "^10.5.5",
     "preact-render-to-string": "^5.1.11",
-    "react": "^17.0.2",
-    "react-dom": "^17.0.2",
+    "react": "npm:@preact/compat",
+    "react-dom": "npm:@preact/compat",
     "react-ssr-prepass": "npm:preact-ssr-prepass@^1.1.2"
   },
   "license": "MIT"