IDLE: Convert browsers to use ttk.Treeview

GitHub fields:

assignee = 'https://github.com/terryjreedy'
closed_at = None
created_at = <Date 2017-09-22.15:18:50.957>
labels = ['expert-IDLE', 'type-bug', '3.11']
title = 'IDLE: Convert browsers to use ttk.Treeview'
updated_at = <Date 2022-03-19.08:43:15.746>
user = 'https://github.com/terryjreedy'

bugs.python.org fields:

activity = <Date 2022-03-19.08:43:15.746>
actor = 'AlexWaygood'
assignee = 'terry.reedy'
closed = False
closed_date = None
closer = None
components = ['IDLE']
creation = <Date 2017-09-22.15:18:50.957>
creator = 'terry.reedy'
dependencies = []
files = []
hgrepos = []
issue_num = 31552
keywords = []
message_count = 8.0
messages = ['302747', '302749', '303189', '303190', '343533', '395060', '415506', '415532']
nosy_count = 2.0
nosy_names = ['terry.reedy', 'aroberge']
pr_nums = []
priority = 'normal'
resolution = None
stage = 'test needed'
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue31552'
versions = ['Python 3.11']