fix: --js:strict and benchmark symbols

[Sam Gammon (sgammon)]

Summary

Adds necessary support infra to be able to run js-benchmarks on Elide.

• Fixes: Flag --js:strict has no effect #1667
• Fixes: Missing js benchmark symbols #1665

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 40.59%. Comparing base (22be5d0) to head (78b8a43).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1668   +/-   ##
=======================================
  Coverage   40.58%   40.59%           
=======================================
  Files         798      799    +1     
  Lines       37803    37813   +10     
  Branches     5387     5387           
=======================================
+ Hits        15344    15351    +7     
- Misses      20633    20637    +4     
+ Partials     1826     1825    -1     

Flag	Coverage Δ
jvm	40.59% <100.00%> (+<0.01%)	⬆️
lib	40.59% <100.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
.../elide/tool/cli/options/EngineJavaScriptOptions.kt	60.00% <100.00%> (+2.10%)	⬆️
.../kotlin/elide/runtime/gvm/internals/js/JsTimers.kt	65.82% <100.00%> (+0.21%)	⬆️
...time/gvm/intrinsics/BuildTimeIntrinsicsResolver.kt	100.00% <100.00%> (ø)
...in/kotlin/elide/runtime/javascript/BrowserStubs.kt	100.00% <100.00%> (ø)
...main/kotlin/elide/runtime/plugins/js/JavaScript.kt	90.83% <100.00%> (ø)
...otlin/elide/runtime/plugins/js/JavaScriptConfig.kt	90.90% <100.00%> (+0.09%)	⬆️

... and 1 file with indirect coverage changes

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