[Fix] Combining column relationship with constraints not working

[frances-h]

Resolve #2768

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.13%. Comparing base (4c16f9d) to head (44a3ffd).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2771   +/-   ##
=======================================
  Coverage   98.13%   98.13%           
=======================================
  Files          73       73           
  Lines        8078     8079    +1     
=======================================
+ Hits         7927     7928    +1     
  Misses        151      151           

Flag	Coverage Δ
integration	75.59% <100.00%> (+0.02%)	⬆️
unit	97.16% <100.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[amontanez24]

why does this fix it?

[frances-h]

The data processor uses the _valid_column_relationships attribute here to iterate over column relationships. That attribute only gets set here when validating the column relationships.

When we add constraints at the single table level, we use the updated metadata from the constraints for the data processor, but it was missing the _valid_column_relationships attribute because the updated metadata hadn't been validated.