[issue44635] Convert None to NoneType in the union type constructor

[Serhiy Storchaka]

Change by Serhiy Storchaka <storchaka+cpython at gmail.com>:


----------
pull_requests: +25684
pull_request: https://github.com/python/cpython/pull/27142

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue44635>
_______________________________________