update react-native-here-explore in react-native-libraries.json

[ajakka]

📝 Why & how

✅ Checklist

• Added library to react-native-libraries.json
• Updated library in react-native-libraries.json

• Documented how you found or replicated the issue.
• Explained how you fixed the issue or built the feature.
• Described how to use or verify the change.

[Simek]

Hey @ajakka, thanks for the data updates! 👍

I have removed the npmPkg field since it's redundant in this package case. Its main use-case is for scoped packages or packages in the monorepo, see:

• https://github.com/react-native-community/directory?tab=readme-ov-file#npmpkg