test_runner: pass setup context to global teardown

[Han5991]

Summary

• pass the return value of globalSetup() into globalTeardown(context) in the test runner harness
• replace the context-sharing TODOs with concrete coverage in both node:test.run and CLI global hook suites
• document that globalSetup return values are provided to globalTeardown

Testing

• python3 tools/test.py test/parallel/test-runner-run-global-hooks.mjs test/parallel/test-runner-global-setup-teardown.mjs

[nodejs-github-bot]

Review requested:

• @nodejs/test_runner

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.74%. Comparing base (c2a0353) to head (e9d71b4).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #61726   +/-   ##
=======================================
  Coverage   89.73%   89.74%           
=======================================
  Files         675      675           
  Lines      204525   204527    +2     
  Branches    39308    39305    -3     
=======================================
+ Hits       183531   183545   +14     
+ Misses      13285    13248   -37     
- Partials     7709     7734   +25     

Files with missing lines	Coverage Δ
lib/internal/test_runner/harness.js	91.86% <100.00%> (+0.03%)	⬆️

... and 32 files with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.