MAT-6482: add list of associations to Stratification

[chubert-sb]

MADiE PR Template

Jira Ticket: MAT-6482
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Summary

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• This PR has the JIRA linked.
• Required tests are included.
• No extemporaneous files are included (i.e. Complied files or testing results).
• This PR is merging into the correct branch.
• All Documentation needed for this PR is Complete (or noted in a TODO or other Ticket).
• Any breaking changes or failing automations are noted by placing a comment on this PR.

DevSecOps

If there is a question if this PR has a security or infrastructure impact, please contact the Security or DevOps engineer assigned to this project to discuss it further.

• This PR has NO significant security impact (i.e Changing auth methods, Adding a new user type, Adding a required but vulnerable package).

Reviewers

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• Code is maintainable and reusable, reuses existing code and infrastructure where appropriate, and accomplishes the task’s purpose.
• The tests appropriately test the new code, including edge cases.
• If you have any concerns they are brought up either to the developer assigned, security engineer, or leads.