Run xeus-cpp-lite tests Emscripten workflows

[mcbarton]

Description

Please include a summary of changes, motivation and context for this PR.

Now that the Emscripten build of xeus-cpp builds tests, we can now run them as part of the Emscripten workflow in CppInterOp. This allows us to ensure that any changes to Emscripten build/functionality of CppInterOp doesn't break the Emscripten build/functionality of xeus-cpp.

Fixes # (issue)

Type of change

Please tick all options which are relevant.

• Bug fix
• New feature
• Requires documentation updates

Testing

Please describe the test(s) that you added and ran to verify your changes.

Checklist

• I have read the contribution guide recently

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 75.94%. Comparing base (3258584) to head (8ab7d4c).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #549   +/-   ##
=======================================
  Coverage   75.94%   75.94%           
=======================================
  Files           9        9           
  Lines        3646     3646           
=======================================
  Hits         2769     2769           
  Misses        877      877           

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[anutosh491]

I think this looks good !