chore: Bump react-modal to 3.16.2 in with-router-as-modal example (#6…

…5841)

### What?

Example update to `with-route-as-modal`, which used `react-modal@13.1.2`

### Why?

The `react-modal` version specified, did not include react 18 as
peer-dependency.

This causes users to have problems when creating the example:
#65835

### How?

Bump version to latest available, 13.16.1.

Co-authored-by: Sam Ko <sam@vercel.com>

examples/with-route-as-modal/package.json

@@ -9,6 +9,6 @@
     "next": "latest",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
-    "react-modal": "3.11.2"
+    "react-modal": "3.16.1"
   }
 }