Merge pull request wjbeckett#40 from wjbeckett/fix/hdr-renderer-logic

Fix/hdr renderer logic

Merge pull request wjbeckett#39 from wjbeckett/fix/hdr-renderer-logic

fix: Revert to moonlight-qt HDR renderer selection logic

Merge pull request wjbeckett#38 from wjbeckett/feature/universal-inst…

…allers-build-system

Feature/universal installers build system

Merge pull request wjbeckett#36 from wjbeckett/feature/universal-inst…

…allers-build-system

fix(ci): Bundle raspberryPi artifacts in a zip.

Merge pull request wjbeckett#33 from wjbeckett/feature/universal-inst…

…allers-build-system

fix(ci): artifacts missing from release.

Merge pull request wjbeckett#32 from wjbeckett/feature/universal-inst…

…allers-build-system

Feature/universal installers build system

Merge pull request wjbeckett#30 from wjbeckett/fix/av1-hardware-detec…

…tion-improvement

Fix/av1 hardware detection improvement

Merge pull request wjbeckett#25 from wjbeckett/fix/flatpak-hardware-a…

…cceleration

feat: Fix Flatpak hardware acceleration detection issue

Merge pull request wjbeckett#24 from wjbeckett/fix/hdr-av1-steam-deck

feat: Implement comprehensive HDR/AV1/aspect ratio fixes

Fix build errors: Qt 6.8.3 compatibility issues in systemproperties.cpp

- Fix QByteArray::contains() incompatibility by converting to QString first
- Add proper parentheses for logical operator precedence
- Remove orphaned SDL_QuitSubSystem() call and extra closing brace
- Resolves compilation errors on macOS, Linux, AppImage, and SteamDeck builds

The build errors were caused by Qt 6.8.3 changes where QByteArray::contains()
no longer supports case-insensitive matching. Fixed by converting QByteArray
to QString before calling contains() with Qt::CaseInsensitive.