`pygame.mixer.music` isn't a real module

[aatle]

Environment:
pygame-ce 2.5.4.dev1

Current behavior:
The music module currently exists only as an attribute of pygame.mixer, and so isn't a real module.
Certain import statements fail because of this.

Expected behavior:
pygame.mixer.music should exist in sys.modules so that imports work as expected.
Additionally, the stubs should reflect any fixes for this.

Test code

from pygame.mixer.music import queue
import pygame.mixer.music

Stack trace/error output/other error logs

$ python blank.py
pygame-ce 2.5.4.dev1 (SDL 2.32.2, Python 3.13.0)
Traceback (most recent call last):
  File "C:\Users\...\main.py", line 1, in <module>
    from pygame.mixer.music import queue
ModuleNotFoundError: No module named 'pygame.mixer.music'; 'pygame.mixer' is not a package

mypy:

Cannot find implementation or library stub for module named "pygame.mixer.music" mypy(import-not-found)

Comments
It's a relatively minor issue but I wanted to put this up for discussion.
I consider this a bug because it would be expected that pygame.mixer.music is a real module.
While pygame.mixer_music (the actual module) exists, it is undocumented. It is exposed as an exported module in the stubs though.
The fix would be to set sys.modules["pygame.mixer.music"] = mixer_music, but this doesn't work for stubs. pygame.mixer probably has to be turned into a package in the stubs for this to be fixed.
A possible change that has been discussed before is to alias pygame.music to pygame.mixer.music.

[ankith26]

How does one turn pygame.mixer into a package? I feel like if that's not too hard and doesn't break anything, might be the best way out