Allow a CFood to have identifiables that depend on each other. E.g. an identifiable Project and an Experiment that references it.
Focus
Identifiables are now treated one after the other when checking whether they need to be inserted.
Test Environment
Automated tests should suffice. Note that tests where changed slightly such that they fail without this fix:
https://gitlab.indiscale.com/caosdb/src/caosdb-advanced-user-tools/-/jobs/37342
Since identifiables are not treated correctly the experiment is inserted a second time which leads to the violation of the unique query.
Check List for the Author
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All automated tests pass
Reference related Issues
Up-to-date CHANGELOG.md
Annotations in code (Gitlab comments)
Intent of new code
Problems with old code
Why this implementation?
Check List for the Reviewer
I understand the intent of this MR
All automated tests pass
Up-to-date CHANGELOG.md
The test environment setup works and the intended behavior is
reproducible in the test environment
In-code documentation and comments are up-to-date.
Check: Are there spezifications? Are they satisfied?
