[js/rn] Package dependency change to manage ort-extensions for react_native app (#15641)
### Description
<!-- Describe your changes. -->
js/react_native package dependency change to manage ort-extensions for
react-native app.
Enable optional inclusion of ort-ext aar/ ort-ext pods for react-native
extensions apps when specifiy `ortExtensionsEnabled` in user's
package.json file
### Motivation and Context
<!-- - Why is this change required? What problem does it solve?
- If it fixes an open issue, please link to the issue here. -->
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Co-authored-by: rachguo <rachguo@rachguos-Mac-mini.local>
Co-authored-by: rachguo <rachguo@rachguos-Mini.attlocal.net>