Add local .wast regression tests for Wasmi's wide-arithmetic proposal support

[Robbepop]

Follow-up to #1545 to add .wast based regression tests.

cc @saulecabrera

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 72.28%. Comparing base (51b1ce6) to head (60a7f48).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1546      +/-   ##
==========================================
+ Coverage   72.17%   72.28%   +0.11%     
==========================================
  Files         179      179              
  Lines       16401    16401              
==========================================
+ Hits        11837    11856      +19     
+ Misses       4564     4545      -19     

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