Expose `Utf8Lossy` as `Utf8Chunks` This PR changes the feature for `Utf8Lossy` from `str_internals` to `utf8_lossy` and improves the API. This is done to eventually expose the API as stable. Proposal: rust-lang/libs-team#54 Tracking Issue: #99543
Layout::array
Display
cell::{Ref,RefMut}
lazy::{OnceCell, Lazy}
cell::{OnceCell, LazyCell}
Utf8Lossy
Utf8Chunks