Switch the Windows Fleet-maintained app test workflows from
windows-latest to windows-11-arm so ARM-native FMAs can be validated.
Existing x86/x64 FMAs continue to install and run via Windows 11 on
ARM's Prism emulation, and detection is registry-based so it stays
architecture-agnostic.
Also make the osquery download architecture-aware: pick the native arm64
build on ARM64 runners and fall back to x86_64 otherwise, so osqueryi
runs natively rather than under emulation.
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## Summary by CodeRabbit
* **Tests**
* Expanded test coverage to include Windows 11 ARM64 architecture. The
application is now validated on ARM-based systems in addition to
traditional x86_64 platforms.
* Updated test infrastructure to automatically detect system
architecture and download corresponding dependencies, ensuring proper
validation across both ARM64 and x86_64 Windows configurations.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Allen Houchins
a55d3e3e3a