Turbopack: prevent hanging due to content hashing (#78545)
If you enable content hashing, you need to use `CurrentChunkMethod::DocumentCurrentScript`, otherwise there's an infinite loop of `getting the current chunk's name for including it in the content <--> building the content of the chunk`
This was already being done here for next-client: https://github.com/vercel/next.js/blob/fb0abb44bf21ca98848d0b9c7ff45a291cc05e46/crates/next-core/src/next_client/context.rs#L465
