refactor: Change RDF handling for querying Projects from DB (DEV-3175)

[BalduinLandolt]

Pull Request Checklist

Task Description/Number

Issue Number: DEV-

PR Type

• build/chore: maintenance tasks (no production code change)
• docs: documentation changes (no production code change)
• feat: represents new features
• fix: represents bug fixes
• perf: performance improvements
• refactor: represents production code refactoring
• test: adding or refactoring tests (no production code change)

Basic requirements for bug fixes and features

• Tests for the changes have been added
• Docs have been added / updated

Does this PR introduce a breaking change?

• Yes

Does this PR change client-test-data?

• Yes

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (eac5751) 11.74% compared to head (2e29b1c) 11.60%.
Report is 51 commits behind head on main.

❗ Current head 2e29b1c differs from pull request most recent head db90508. Consider uploading reports for the commit db90508 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2989      +/-   ##
==========================================
- Coverage   11.74%   11.60%   -0.14%     
==========================================
  Files         246      260      +14     
  Lines       22907    22929      +22     
==========================================
- Hits         2690     2661      -29     
- Misses      20217    20268      +51     

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[linear]

DEV-3175 Improve RDF handling in Project Repo

[siers]

(I was introduced to this by Balduin.)

[seakayone]

LGTM.

I have just had some minor note for improving this, please address them before merging.

[mpro7]

Thanks! I have one question, not sure if important, but please address it before merge: