Build the C# projection for AnyCPU

[florelis]

Summary of the Pull Request

The C# projection binary should be built for AnyCPU. I intended for it to do that by not setting the platform explicitly and relying on the default, but that still built for a specific platform due to the global settings. This sets the target to AnyCPU explicitly.

PR Checklist

• Closes: Link to issue #xxx
• Communication: I've discussed this with core contributors already. If work hasn't been agreed, this work might be rejected
• Tests: Added/updated if needed and all pass
• Localization: All end user facing strings can be localized
• Dev docs: Added/updated if needed
• Documentation updated: If checked, please file a pull request on our docs repo and link it here: #xxx

Detailed Description of the Pull Request / Additional comments

Validation Steps Performed

[Copilot]

Pull request overview

Forces the C# projection (wslcsdkcs) to build for AnyCPU by explicitly setting the relevant MSBuild global properties via CMake.

Changes:

• Add VS_GLOBAL_Platform, VS_GLOBAL_Platforms, and VS_GLOBAL_PlatformTarget properties set to AnyCPU on the wslcsdkcs target.

[JohnMcPMS]

Is this a shotgun approach or do we need to set all of these values?

[florelis]

Is this a shotgun approach or do we need to set all of these values?

Shotgun approach. It matches what wslsettings does. It's not immediately clear to me which of these are set by the VS generator from ${TARGET_PLATFORM} or ${CMAKE_GENERATOR_PLATFORM}, so it's just easier to set all.