Check validity of the `acosh-approx.js` test

[nicolo-ribaudo]

Not sure where to report this but acosh-approx.js added with this batch breaks when the implementation just defer's to macOS Sonoma's libc++ (via std::acosh). Newer macOS Sequoia seems to pass though.

Originally posted by @kmiller68 in #4106 (comment)

[nickva]

I noticed the discrepancy as well when running tests against QuickJS which passes these calls to the underlying libc library (like Python does) and tried to fix it in #4492