fix: replace ReactDOM.render with createRoot in React padding example

Author: nikhilsdabhade

examples/react/padding/src/main.tsx

@@ -1,5 +1,5 @@
 import React from 'react'
-import ReactDOM from 'react-dom'
+import ReactDOM from 'react-dom/client'
 
 import './index.css'
 
@@ -256,9 +256,9 @@ function GridVirtualizerDynamic({
   )
 }
 
-ReactDOM.render(
+const root = ReactDOM.createRoot(document.getElementById('root') as HTMLElement)
+root.render(
   <React.StrictMode>
     <App />
   </React.StrictMode>,
-  document.getElementById('root'),
 )