gh-145261: multiprocessing.shared_memory: fix ShareableList corruption for multi-byte strings and null bytes#145266

zetzschest wants to merge 2 commits intopython:mainpython/cpython:mainfrom

zetzschest:fix/multiprocessing_shareable_list_utf8zetzschest/cpython:fix/multiprocessing_shareable_list_utf8Copy head branch name to clipboard