Add tests from korlibs-io and fixes WasmJS target

[soywiz]

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[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 65.00%. Comparing base (2d2d49e) to head (aab58a8).
Report is 1 commits behind head on main.

Files	Patch %	Lines
...rlibs-jseval/src@jvm/korlibs/io/lang/JSEval.jvm.kt	50.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##            main       #4       +/-   ##
==========================================
+ Coverage   0.00%   65.00%   +65.00%     
==========================================
  Files          3        3               
  Lines         19       20        +1     
  Branches       5        5               
==========================================
+ Hits           0       13       +13     
+ Misses        19        4       -15     
- Partials       0        3        +3     

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