fix(ncu-ci): pass COMMIT_SHA_CHECK to V8 CI

[richardlau]

Similar to node-test-pull-request, node-test-commit-v8-linux also now requires COMMIT_SHA_CHECK to be passed to it.

Refs: #911

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.22%. Comparing base (404c0ac) to head (031133c).
Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #928      +/-   ##
==========================================
+ Coverage   79.76%   80.22%   +0.45%     
==========================================
  Files          39       39              
  Lines        4630     4631       +1     
==========================================
+ Hits         3693     3715      +22     
+ Misses        937      916      -21     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 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.

[targos]

I have no experience with writing tests in this repo.

[richardlau]

I gave up on trying to have different stub implementations and instead modified the stub for Formdata.prototype.append attempt to guess which set of parameters to expect and validate against.