Improved the site module's permission handling while writing .python_history

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2020-01-27.19:46:52.958>
labels = ['type-feature', 'library', '3.9']
title = "Improved the site module's permission handling while writing .python_history"
updated_at = <Date 2021-05-03.21:29:17.689>
user = 'https://github.com/opensource-assist'

bugs.python.org fields:

activity = <Date 2021-05-03.21:29:17.689>
actor = 'opensource-assist'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2020-01-27.19:46:52.958>
creator = 'opensource-assist'
dependencies = []
files = []
hgrepos = []
issue_num = 39468
keywords = ['patch']
message_count = 5.0
messages = ['360790', '360791', '360794', '360871', '360889']
nosy_count = 4.0
nosy_names = ['steven.daprano', 'SilentGhost', 'eryksun', 'opensource-assist']
pr_nums = ['18299', '18210']
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue39468'
versions = ['Python 3.9']