Support CDP response previews for chunked data (#52331)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52331

Updates the iOS inputs to `NetworkReporter` to support incremental string data HTTP responses (`Transfer-Encoding: chunked`).

This means that incremental responses, such as Metro bundle requests, can be displayed as previews in React Native DevTools.

Changelog: [Internal]

Reviewed By: hoxyq

Differential Revision: D77457109

fbshipit-source-id: 00a622dbac97c38e07c67b5ee3661c8d586f6fe1