test: fix URL v8 fast api tests

[anonrig]

Fixes v8 fast api tests in test-whatwg-url-canparse.js

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.27%. Comparing base (9cc0195) to head (ef8da6e).
Report is 7 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #58021      +/-   ##
==========================================
- Coverage   90.28%   90.27%   -0.01%     
==========================================
  Files         630      630              
  Lines      186158   186158              
  Branches    36484    36475       -9     
==========================================
- Hits       168067   168051      -16     
- Misses      10974    10988      +14     
- Partials     7117     7119       +2     

see 27 files with indirect coverage changes

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[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/66463/

[H4ad]

I think is worthy to update the fast api docs to add this note, and maybe the exception when it's called with C++, just to be easy to find the docs when someone receive this error

[anonrig]

Closing in favor of #58023