next.js

a7742270 - Turbopack: use hashbrown HashMaps instead of now-removed std raw entry api (#78032)

Turbopack: use hashbrown HashMaps instead of now-removed std raw entry api (#78032) [HashMap’s raw_entry api](https://github.com/rust-lang/rust/issues/56167), an unstable nightly feature, was removed from the Rust compiler entirely. This migrates us to use the equivalent API in HashBrown’s HashMap.