julia

9cc78153 - Simplify broadcast's eltype promotion mechanism and make it handle more cases. (#19723)

Simplify broadcast's eltype promotion mechanism and make it handle more cases. (#19723) Re-simplify broadcast's eltype promotion mechanism as in #19421. With benefit of #19667, this simplified mechanism should handle additional cases (e.g. closures accepting more than two arguments). Also rename the mechanism more precisely (_broadcast_type -> _broadcast_eltype, typestuple -> eltypestuple).