functools.partial objects should set __signature__ and _annotations__

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2022-02-24.09:39:21.681>
labels = ['type-feature', 'library', '3.11']
title = 'functools.partial objects should set __signature__ and _annotations__'
updated_at = <Date 2022-03-13.04:40:42.891>
user = 'https://github.com/larryhastings'

bugs.python.org fields:

activity = <Date 2022-03-13.04:40:42.891>
actor = 'grahamd'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2022-02-24.09:39:21.681>
creator = 'larry'
dependencies = []
files = []
hgrepos = []
issue_num = 46846
keywords = []
message_count = 1.0
messages = ['413897']
nosy_count = 5.0
nosy_names = ['rhettinger', 'larry', 'eric.araujo', 'grahamd', 'AlexWaygood']
pr_nums = []
priority = 'normal'
resolution = None
stage = 'test needed'
status = 'open'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue46846'
versions = ['Python 3.11']