fix string to genericType tests

[MauricioUyaguari]

Summary

How did you test this change?

• Test(s) added
• Manual testing (please provide screenshots/recordings)
• No testing (please provide an explanation)

[changeset-bot]

🦋 Changeset detected

Latest commit: cd08e19

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 28 packages

Name	Type
@finos/legend-extension-store-service-store	Patch
@finos/legend-server-showcase-deployment	Patch
@finos/legend-extension-dsl-persistence	Patch
@finos/legend-extension-dsl-data-space	Patch
@finos/legend-extension-dsl-diagram	Patch
@finos/legend-application-studio	Patch
@finos/legend-application-query	Patch
@finos/legend-query-builder	Patch
@finos/legend-graph	Patch
@finos/legend-application-query-bootstrap	Patch
@finos/legend-application-studio-bootstrap	Patch
@finos/legend-extension-dsl-data-quality	Patch
@finos/legend-extension-dsl-data-space-studio	Patch
@finos/legend-application-pure-ide	Patch
@finos/legend-vscode-extension-dependencies	Patch
@finos/legend-extension-assortment	Patch
@finos/legend-extension-dsl-service	Patch
@finos/legend-extension-dsl-text	Patch
@finos/legend-extension-store-flat-data	Patch
@finos/legend-extension-store-relational	Patch
@finos/legend-application-repl	Patch
@finos/legend-code-editor	Patch
@finos/legend-data-cube	Patch
@finos/legend-lego	Patch
@finos/legend-application-query-deployment	Patch
@finos/legend-application-studio-deployment	Patch
@finos/legend-application-pure-ide-deployment	Patch
@finos/legend-application-repl-deployment	Patch

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 45.57%. Comparing base (4f1a434) to head (cd08e19).
Report is 2 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff             @@
##           master    #3668       +/-   ##
===========================================
+ Coverage    0.36%   45.57%   +45.20%     
===========================================
  Files        2177     2179        +2     
  Lines      377504   377554       +50     
  Branches     2265    16272    +14007     
===========================================
+ Hits         1374   172053   +170679     
+ Misses     373960   204487   -169473     
+ Partials     2170     1014     -1156     

Files with missing lines	Coverage Δ
...rializationHelpers/V1_DomainSerializationHelper.ts	99.77% <100.00%> (+99.77%)	⬆️
...ers/V1_RawValueSpecificationSerializationHelper.ts	70.41% <100.00%> (+70.41%)	⬆️
...serializationHelpers/V1_TypeSerializationHelper.ts	88.26% <100.00%> (+88.26%)	⬆️

... and 1472 files with indirect coverage changes

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