feat(native): enable the native backend on Xbox

[tustanivsky]

Summary

This PR enables the native (out-of-process) backend for the Xbox GDK (XSX, XboxOne) and WinGDK targets that previously fell back to breakpad by default and couldn't select native due to build-time link errors plus a handful of runtime-API usages incompatible with the Xbox gaming partition.

Now, SENTRY_BACKEND=native produces a working out-of-process daemon that spawns at sentry_init, captures minidumps via MiniDumpWriteDump, and uploads envelopes over WinHTTP on Xbox.

Enabler for https://github.com/getsentry/sentry-xbox/pull/128.

Changes

Build

• Skip the explicit dbghelp.lib link and the #pragma comment(lib, "dbghelp.lib") directive when targeting Xbox. On consoles, MiniDumpWriteDump is provided by xgameplatform.lib (via an API set), while the desktop dbghelp.lib is intentionally excluded by the Xbox toolchain’s /NODEFAULTLIB list. Verified via the Xbox GDK sample AdvancedExceptionHandling, where XSX configurations link $(Console_Libs) (without Dbghelp.lib) and successfully call MiniDumpWriteDump.

Thread enumeration

• Guard enumerate_threads_from_process with SENTRY_PLATFORM_XBOX - the ToolHelp32 API (CreateToolhelp32Snapshot, THREADENTRY32, Thread32First/Next) is not available in the Xbox gaming partition. MiniDumpWriteDump still captures all thread contexts from the target PID; the skipped code only populated supplementary per-thread metadata for the Sentry event payload.

Daemon startup on Xbox

• Call XGameRuntimeInitialize at daemon main entry - required before any XNetworking calls made by the transport during crash upload. Pair with XGameRuntimeUninitialize on exit.

• Pre-warm XNetworking on a detached thread rather than inline. Per the GDK docs on network initialization:

  Network initialization usually takes a couple of seconds on both resume and title launch and varies based on console type and the user's network environment.

Running the warm-up inline could push the daemon’s ready signal past the parent’s SENTRY_CRASH_DAEMON_READY_TIMEOUT_MS window on retail cold boots; backgrounding keeps sentry_init fast while ensuring the network stack is typically ready by the time a crash occurs.

Related items

• https://github.com/getsentry/sentry-xbox/pull/128

[github-actions]

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[JoshuaMoelans]

LGTM, just two very minor nits