bpo-30570: Use Py_EnterRecursiveCall() in issubclass() (GH-29048)

* Use Py_EnterRecursiveCall() in issubclass()

Reviewed-by: Gregory P. Smith <greg@krypto.org> [Google]
(cherry picked from commit 423fa1c1817abfa8c3d1bc308ddbbd8f28b69d68)

Co-authored-by: Dennis Sweeney <36520290+sweeneyde@users.noreply.github.com>