some code paths in ssl and _socket still import idna unconditionally

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2022-02-14.15:55:15.583>
labels = ['interpreter-core', 'expert-SSL', '3.11', 'library', 'performance']
title = 'some code paths in ssl and _socket still import idna unconditionally'
updated_at = <Date 2022-02-16.22:58:31.065>
user = 'https://github.com/slingamn'

bugs.python.org fields:

activity = <Date 2022-02-16.22:58:31.065>
actor = 'slingamn'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Interpreter Core', 'Library (Lib)', 'SSL']
creation = <Date 2022-02-14.15:55:15.583>
creator = 'slingamn'
dependencies = []
files = []
hgrepos = []
issue_num = 46750
keywords = ['patch']
message_count = 7.0
messages = ['413229', '413231', '413237', '413242', '413245', '413252', '413364']
nosy_count = 2.0
nosy_names = ['christian.heimes', 'slingamn']
pr_nums = ['31328']
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'resource usage'
url = 'https://bugs.python.org/issue46750'
versions = ['Python 3.11']