gh-120838: Disallow Py_Finalize() if Py_RunMain() is Running#120841

ericsnowcurrently wants to merge 7 commits intopython:mainpython/cpython:mainfrom

ericsnowcurrently:disallow-pyfinalize-under-pyrunmainericsnowcurrently/cpython:disallow-pyfinalize-under-pyrunmainCopy head branch name to clipboard