gh-140873: Add support of non-descriptor callables in functools.singledispatchmethod()#140884

serhiy-storchaka merged 2 commits intopython:mainpython/cpython:mainfrom

serhiy-storchaka:singledispatchmethod-non-descriptorserhiy-storchaka/cpython:singledispatchmethod-non-descriptorCopy head branch name to clipboard