gh-128078: Simplify logic in `_PyGen_SetStopIterationValue` (follow-up to gh-128780)#128287

kumaraditya303 merged 8 commits intopython:mainpython/cpython:mainfrom

picnixz:fix/core/async-gens-except-128078picnixz/cpython:fix/core/async-gens-except-128078Copy head branch name to clipboard