src: use string_view in WriteReport()

[addaleax]

Since 075936b, TriggerNodeReport() takes std::string_view arguments directly.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.56%. Comparing base (e105e82) to head (ad00d97).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #60201      +/-   ##
==========================================
+ Coverage   88.53%   88.56%   +0.03%     
==========================================
  Files         704      704              
  Lines      208087   208087              
  Branches    40006    40017      +11     
==========================================
+ Hits       184223   184288      +65     
+ Misses      15869    15815      -54     
+ Partials     7995     7984      -11     

Files with missing lines	Coverage Δ
src/node_report_module.cc	87.70% <100.00%> (ø)

... and 33 files with indirect coverage changes

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[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/69663/