pydoc terminal suboptimal rendering of complex annotations

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2021-03-09.19:12:29.560>
labels = ['library', '3.10']
title = 'pydoc terminal suboptimal rendering of complex annotations'
updated_at = <Date 2021-03-09.19:16:59.049>
user = 'https://github.com/dw'

bugs.python.org fields:

activity = <Date 2021-03-09.19:16:59.049>
actor = 'dw'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2021-03-09.19:12:29.560>
creator = 'dw'
dependencies = []
files = []
hgrepos = []
issue_num = 43451
keywords = ['patch']
message_count = 1.0
messages = ['388373']
nosy_count = 1.0
nosy_names = ['dw']
pr_nums = ['24802']
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = None
url = 'https://bugs.python.org/issue43451'
versions = ['Python 3.10']