createCachedBundleFromNetworkLoader

This loader is used when bundle gets reloaded from dev server. In that case loader expect JS bundle to be prefetched and stored in local file. We do that to avoid passing large strings between java and native code and avoid allocating memory in java to fit whole JS bundle in it. Providing correct {@param sourceURL} of downloaded bundle is required for JS stacktraces to work correctly and allows for source maps to correctly symbolize those.