runpy.run_path didn't set __package__ to None as describe in doc

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2022-03-05.00:01:39.190>
labels = ['3.8', 'type-bug', 'library']
title = "runpy.run_path didn't set __package__ to None as describe in doc"
updated_at = <Date 2022-03-08.14:41:05.100>
user = 'https://bugs.python.org/yanhaocharles'

bugs.python.org fields:

activity = <Date 2022-03-08.14:41:05.100>
actor = 'yanhao.charles'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2022-03-05.00:01:39.190>
creator = 'yanhao.charles'
dependencies = []
files = []
hgrepos = []
issue_num = 46926
keywords = []
message_count = 1.0
messages = ['414555']
nosy_count = 1.0
nosy_names = ['yanhao.charles']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue46926'
versions = ['Python 3.8']