gh-135228: Properly update closure cells for __setattr__ and __detattr__ in frozen dataclasses with slots#144021

Prometheus3375 wants to merge 3 commits intopython:mainpython/cpython:mainfrom

Prometheus3375:fix-dataclass-frozen-slots-leakPrometheus3375/cpython:fix-dataclass-frozen-slots-leakCopy head branch name to clipboard