gh-99344, gh-99379, gh-99382: Fix issues in substitution of ParamSpec and TypeVarTuple#99412

serhiy-storchaka merged 1 commit intopython:mainpython/cpython:mainfrom

serhiy-storchaka:typing-paramspec-substserhiy-storchaka/cpython:typing-paramspec-substCopy head branch name to clipboard