'venv --clear' should prompt user before nuking entire directory

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2022-01-10.09:01:46.744>
labels = ['type-bug']
title = "'venv --clear' should prompt user before nuking entire directory"
updated_at = <Date 2022-01-13.15:29:41.064>
user = 'https://github.com/alimpfard'

bugs.python.org fields:

activity = <Date 2022-01-13.15:29:41.064>
actor = 'ned.deily'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = []
creation = <Date 2022-01-10.09:01:46.744>
creator = 'alimpfard'
dependencies = []
files = []
hgrepos = []
issue_num = 46326
keywords = []
message_count = 6.0
messages = ['410192', '410223', '410228', '410229', '410230', '410282']
nosy_count = 3.0
nosy_names = ['vinay.sajip', 'eryksun', 'alimpfard']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue46326'
versions = []