[3.12] gh-126417: validate ABC methods on multiprocessing proxy types (GH-126454)#126675

miss-islington wants to merge 1 commit intopython:3.12python/cpython:3.12from

miss-islington:backport-6ee542d-3.12miss-islington/cpython:backport-6ee542d-3.12Copy head branch name to clipboard