Email policy option for disabling RFC2231 Mime parameter folding

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2021-11-12.11:56:23.253>
labels = ['expert-email', '3.10', '3.9']
title = 'Email policy option for disabling RFC2231 Mime parameter folding'
updated_at = <Date 2021-11-12.11:56:23.253>
user = 'https://bugs.python.org/Ezekeel'

bugs.python.org fields:

activity = <Date 2021-11-12.11:56:23.253>
actor = 'Ezekeel'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['email']
creation = <Date 2021-11-12.11:56:23.253>
creator = 'Ezekeel'
dependencies = []
files = []
hgrepos = []
issue_num = 45794
keywords = []
message_count = 1.0
messages = ['406205']
nosy_count = 3.0
nosy_names = ['barry', 'r.david.murray', 'Ezekeel']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = None
url = 'https://bugs.python.org/issue45794'
versions = ['Python 3.9', 'Python 3.10']