pkgutil.get_data() doesn't add subpackages to parent packages when importing

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2021-10-29.19:26:00.225>
labels = ['type-bug', 'library', '3.9', '3.10', '3.11']
title = "pkgutil.get_data() doesn't add subpackages to parent packages when importing"
updated_at = <Date 2021-11-29.20:57:45.153>
user = 'https://github.com/godlygeek'

bugs.python.org fields:

activity = <Date 2021-11-29.20:57:45.153>
actor = 'godlygeek'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2021-10-29.19:26:00.225>
creator = 'godlygeek'
dependencies = []
files = []
hgrepos = []
issue_num = 45675
keywords = []
message_count = 4.0
messages = ['405331', '405332', '405827', '407324']
nosy_count = 5.0
nosy_names = ['brett.cannon', 'ncoghlan', 'eric.snow', 'pablogsal', 'godlygeek']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue45675'
versions = ['Python 3.9', 'Python 3.10', 'Python 3.11']