game-porting-toolkit: Add patch fixing Steam

[Gcenx]

Description

Imported a patch that fixes the Steam client, also allow game-porting-toolkit built on macOS Sonoma to be used on macOS Sequoia and later.

The port is expected to fail with the macOS Sequoia action/buildbot due to requiring an older SDK to build, as MacOSX.sdk still hasn't been updated theres nothing else I can do.

Type(s)

• enhancement

Tested on

macOS 14.7.2 23H311 x86_64
Xcode 16.2 16C5032a

Verification

• followed our Commit Message Guidelines?
• squashed and minimized your commits?
• checked that there aren't other open pull requests for the same change?
• checked your Portfile with port lint?
• tried existing tests with sudo port test?
• tried a full install with sudo port -vst install?
• tested basic functionality of all binary files?
• checked that the Portfile's most important variants haven't been broken?

[reneeotten]

will any of this be incorporated upstream for a next release? Ideally we don't want to carry forward patches with ~2000 lines...

[Gcenx]

will any of this be incorporated upstream for a next release? Ideally we don't want to carry forward patches with ~2000 lines...

Apple haven't upgraded https://github.com/apple/homebrew-apple in 2 years, if the large patch files are the issue the alternative is I could redo my mirror so it's wine-7.7 + game-porting-toolkit patches then apply all the needed patches and use that as the source instead.