chore(windows): include debug symbols in test builds

As we don't upload Sentry symbols for test builds, is it possible to include symbols such that we get annotated call stacks for test build crashes?

No files, tests, or build entry points are named. Start by locating the Windows test-build configuration and how debug symbols are generated or packaged, then verify that a test-build crash produces annotated call stacks. Done means test-build crashes can be diagnosed with symbols without relying on Sentry uploads.

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