feat(conform-react): capture list item error

[edmundhung]

This PR adds error capturing logic for each list item, which is useful when dealing with simple array structure like string[]

function Example() {
  const [list, command] = useFieldList(form.ref, items.config);

  return (
    <ol>
      {list.map(item => (
        <li key={item.key}>
          <input {...conform.input(item.config)} />
          {item.error}
        </li>
      )}
    </ol>
  );
}

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Latest commit:	6417920
Status:	✅  Deploy successful!
Preview URL:	https://1c5864e9.conform.pages.dev
Branch Preview URL:	https://simple-list.conform.pages.dev

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