SSLContext.set_npn_protocols broken in Python 3.10, tries to call non-existing _set_npn_protocols

GitHub fields:

assignee = 'https://github.com/tiran'
closed_at = None
created_at = <Date 2021-12-13.17:18:24.853>
labels = ['expert-SSL', 'build', '3.10']
title = 'SSLContext.set_npn_protocols broken in Python 3.10, tries to call non-existing _set_npn_protocols'
updated_at = <Date 2021-12-13.17:18:24.853>
user = 'https://github.com/diabonas'

bugs.python.org fields:

activity = <Date 2021-12-13.17:18:24.853>
actor = 'diabonas'
assignee = 'christian.heimes'
closed = False
closed_date = None
closer = None
components = ['SSL']
creation = <Date 2021-12-13.17:18:24.853>
creator = 'diabonas'
dependencies = []
files = []
hgrepos = []
issue_num = 46067
keywords = []
message_count = 1.0
messages = ['408466']
nosy_count = 2.0
nosy_names = ['christian.heimes', 'diabonas']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'compile error'
url = 'https://bugs.python.org/issue46067'
versions = ['Python 3.10']