expands tests to run on osx-arm64 and linux-x64

[prathikr]

Adds mac/linux test coverage for FL Core & SDK and retires github actions macos tests. Also removes our reliance on PATs.

NOTE: The Linux JS test job is currently disabled due to intermittent SSL errors when running get_model_list. This issue is under investigation.

[Copilot]

Pull request overview

Note

Copilot was unable to run its full agentic suite in this review.

Expands CI test execution across additional OS/architecture combos (notably macOS arm64 and Linux x64) by splitting SDK build and test steps into dedicated Azure Pipelines templates and wiring new test stages/jobs into the main packaging pipeline.

Changes:

• Add new Azure Pipelines test-step templates for C#, JS, Python, and Rust SDKs and move test execution out of build templates.
• Update packaging pipeline to run SDK tests on win-x64, linux-x64, and osx-arm64 (with JS linux-x64 currently commented out).
• Remove legacy GitHub Actions SDK build workflows in favor of Azure DevOps orchestration.

Reviewed changes

Copilot reviewed 16 out of 16 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
sdk/js/test/detail/modelLoadManager.test.ts	Increases Mocha timeout to reduce macOS CI flakiness from slow network fetches.
.pipelines/templates/test-rust-steps.yml	New reusable Rust SDK test steps (extract native bits, install toolchain, run unit/integration tests).
.pipelines/templates/test-python-steps.yml	New reusable Python SDK test steps (select Python arch, install wheels/deps, run pytest).
.pipelines/templates/test-js-steps.yml	New reusable JS SDK test steps (install deps, place native bits, build, run tests).
.pipelines/templates/test-cs-steps.yml	New reusable C# SDK test steps (NuGet config, restore/build/test).
.pipelines/templates/build-rust-steps.yml	Removes Rust test execution from build template (now in test template).
.pipelines/templates/build-python-steps.yml	Adjusts ORT packages on Linux; removes Python test execution from build template.
.pipelines/templates/build-js-steps.yml	Removes JS test execution from build template.
.pipelines/templates/build-cs-steps.yml	Removes C# test execution from build template.
.pipelines/templates/build-core-steps.yml	Expands condition for restoring FLC tests to include linux-x64 and osx-x64 flavors.
.pipelines/foundry-local-packaging.yml	Adds SDK test stages/jobs for standard + WinML; adds osx-arm64 pool usage; updates job display names; comments out JS linux test job.
.github/workflows/foundry-local-sdk-build.yml	Removes legacy SDK build orchestration workflow.
.github/workflows/build-rust-steps.yml	Removes legacy GitHub Actions Rust SDK workflow.
.github/workflows/build-python-steps.yml	Removes legacy GitHub Actions Python SDK workflow.
.github/workflows/build-js-steps.yml	Removes legacy GitHub Actions JS SDK workflow.
.github/workflows/build-cs-steps.yml	Removes legacy GitHub Actions C# SDK workflow.

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