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 

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[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.