[Windows] scandir returns filenotfound for long paths but os.walk does not

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2021-12-15.14:54:30.143>
labels = ['expert-IO', 'tests', 'OS-windows', 'type-crash', '3.9']
title = 'Python 3.9.6 scan_dir returns filenotfound on long paths, but os_walk does not'
updated_at = <Date 2022-03-21.18:46:36.102>
user = 'https://bugs.python.org/jschwar313'

bugs.python.org fields:

activity = <Date 2022-03-21.18:46:36.102>
actor = 'jkloth'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Tests', 'Windows', 'IO']
creation = <Date 2021-12-15.14:54:30.143>
creator = 'jschwar313'
dependencies = []
files = ['50492', '50493', '50495']
hgrepos = []
issue_num = 46084
keywords = ['patch']
message_count = 13.0
messages = ['408607', '408608', '408617', '408619', '408621', '408623', '408625', '408626', '408632', '408634', '408636', '408643', '408649']
nosy_count = 8.0
nosy_names = ['paul.moore', 'tim.golden', 'jkloth', 'zach.ware', 'serhiy.storchaka', 'eryksun', 'steve.dower', 'jschwar313']
pr_nums = []
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = 'crash'
url = 'https://bugs.python.org/issue46084'
versions = ['Python 3.9']