Updates can fail on macOS when osu! is run outside /Applications or
~/Applications, but users currently get no actionable guidance.
Add a startup notification that warns when the install location is
outside those directories, and skip this check for package-managed
installs where in-app updates are not used.
Resolves#36662.
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Co-authored-by: Dean Herbert <pe@ppy.sh>
This is enforced by the localisation analyser after
https://github.com/ppy/osu-localisation-analyser/pull/62, but it appears
the analyser was never actually bumped game-side after that change and
I'm not super sure why, as there does not appear to be a reason to _not_
do that. So this commit does it.