Re-enable tests on Jazzy for Windows

[minggangw]

Separates the Windows Jazzy CI into a dedicated reusable workflow with pixi-based dependency management, while the remaining distros (Humble, Kilted, Rolling) continue using the original setup-ros approach. Adds targeted Windows-only test skips for six Jazzy test failures that are caused by platform-specific portability issues, not product bugs.

Workflow refactoring:

• .github/workflows/windows-build-and-test.yml → .github/workflows/windows-build.yml — Renamed from "Windows Build and Test" to "Windows Build (Reusable)". Removed Jazzy from the distro matrix (moved to its own workflow). Removed the test step (non-Jazzy distros are build-only on Windows).
• .github/workflows/windows-jazzy-build-and-test.yml (new) — Dedicated Jazzy Windows build-and-test reusable workflow. Uses pixi for native dependency management instead of setup-ros. Downloads the Jazzy ROS 2 release zip and pixi manifest. Prepends pixi DLL directories to PATH for runtime resolution. Runs both npm i (build) and npm test (test).
• .github/workflows/windows-pr-test.yml — Updated to call both windows-build.yml and windows-jazzy-build-and-test.yml.
• .github/workflows/windows-push-test.yml — Updated to call both windows-build.yml and windows-jazzy-build-and-test.yml.

Targeted Windows test skips:

• test/test-native-loader.js — Skip customFallbackLoader attempts to require exact match if exists on Windows. Reason: test overrides process.platform to linux and probes Ubuntu-specific prebuild paths.
• test/test-rate.js — Skip rate sleep accuracy test, 1000 hz for 3 seconds on Windows. Reason: Windows timer resolution (~15 ms) cannot meet the 1 kHz accuracy threshold.
• test/test-rosidl-message-generator.js — Skip Generate message at runtime on Windows (shells through bash and sources local_setup.sh, not portable). Skip Testing mrpt_msgs/msg/GraphSlamAgents from non-standard msg subfolder on Windows (mrpt_msgs package unavailable in the Windows Jazzy environment).
• test/test-serialization.js — Skip std_msgs/msg/MultiArrayDimension serialization round-trip on Windows. Reason: inconsistent deserialization behavior on Windows for this specific message type.
• test/test-type-description-service.js — Skip Test type description service configured by parameter and Test start_type_description_service parameter value on Windows. Reason: ROS CLI ros2 param commands are brittle/hanging on Windows; main service test is unaffected.

Fix: #1436

[Copilot]

Pull request overview

Updates the Windows CI workflow to handle ROS 2 Jazzy by downloading a specific prebuilt Windows archive and adjusting the build/test steps accordingly.

Changes:

• Adds a matrix include entry to supply a Jazzy-specific ros_binary_url.
• Installs 7-Zip/wget on Jazzy jobs and downloads/extracts the Jazzy Windows binary zip.
• Gates npm test to run only on Jazzy and switches the test environment setup call.

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[coveralls]

coverage: 85.961% (-0.02%) from 85.981%
when pulling 4cdf533 on minggangw:enable-tests-on-jazzy
into d78ed38 on RobotWebTools:develop.