[Cases] Explicitly mapping user action SOs attributes

[cnasikas]

Summary

This PR maps the SO attributes explicitly when returning a user action SO from within the user services.

For maintainers

• This was checked for breaking API changes and was labeled appropriately

[kibana-ci]

💚 Build Succeeded

• Buildkite Build
• Commit: aa01c90

Metrics [docs]

Unknown metric groups

ESLint disabled line counts

id	before	after	diff
enterpriseSearch	19	21	+2
securitySolution	398	401	+3
total			+5

References to deprecated APIs

id	before	after	diff
cases	59	13	-46

Total ESLint disabled count

id	before	after	diff
enterpriseSearch	20	22	+2
securitySolution	478	481	+3
total			+5

History

• 💚 Build #125249 succeeded 107c58b

To update your PR or re-run it, just comment with:
@elasticmachine merge upstream

cc @cnasikas

[adcoelho]

Shouldn't this be also explicitly mapped?

[cnasikas]

Closing in favor of #157971