48fcf028 - Rename `psum2` to `psum_invariant` and put it in `lax_parallel`. We shouldn't expose this to public API and have users use `psum` instead which will dispatch to `psum_invariant` when `check_rep=True`.
Rename `psum2` to `psum_invariant` and put it in `lax_parallel`. We shouldn't expose this to public API and have users use `psum` instead which will dispatch to `psum_invariant` when `check_rep=True`.
PiperOrigin-RevId: 745352875