TST: Added test for https://gitlab.com/linkahead/linkahead-server/-/issues/280 and update changelog

Summary

Test that the server returns identifying information (name or id) of a missing obligatory property.
Test for https://gitlab.indiscale.com/caosdb/customers/f-fit/management/-/issues/95 / https://gitlab.com/linkahead/linkahead-server/-/issues/280

Check List for the Author

• All automated tests pass
• Reference related issues
• Up-to-date CHANGELOG.md (or not necessary)
• Up-to-date JSON schema (or not necessary)
• Appropriate user and developer documentation (or not necessary)
• Annotations in code (Gitlab comments)

Check List for the Reviewer

• I understand the intent of this MR
• All automated tests pass
• Up-to-date CHANGELOG.md (or not necessary)
• Appropriate user and developer documentation (or not necessary)
• 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 specifications? Are they satisfied?