Merge latest ppy/master (4 commits) while preserving fork-preferred conflict resolution - #346

…y#37795)

Closes ppy#37723

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Co-authored-by: Dan Balasescu <smoogipoo@smgi.me>

As we go forward, migrations are going to likely become more complex,
requiring access to more components and also at a point in time where
they are ready.

In the upcoming case, `DialogOverlay` and `Audio` are important. Access
to `Audio` is a killer as migrations were run before the `GameHost` has
a chance to initialise it.

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Co-authored-by: Bartłomiej Dach <dach.bartlomiej@gmail.com>

- Part of ppy/osu-server-spectator#405

<img width="1624" height="900" alt="Screenshot 2026-05-13 at 12 40 07"
src="https://github.com/user-attachments/assets/a7f36d54-4cc6-49c9-8e89-ee0d049bb637"
/>
<img width="1624" height="900" alt="Screenshot 2026-05-13 at 12 31 40"
src="https://github.com/user-attachments/assets/0c054dfd-addd-4d00-bbca-119b4c3ec3cb"
/>

Will not work until relevant server-side support is in.

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I was in two minds whether to PR this all at once or to PR only
ppy@693e4ef
to begin with to unblock server-side implementation. In the end I opted
for one PR because usage informs the model, so I find everything else
relevant as part of review of the model design. If there are concerns
about this making it into a release without server-side support and
therefore things looking broken I will split the commit out on request.

I put in some effort to add relevant logic in test multiplayer client to
simulate the server side but I may well have missed something.

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Co-authored-by: Dean Herbert <pe@ppy.sh>

…lot/merge-ppy-updates-with-our-fork

Co-authored-by: winnerspiros <1675249+winnerspiros@users.noreply.github.com>