[to dev/1.3] Fix nested ColumnTransformer close

[shuwenwei]

Summary

• Propagate ColumnTransformer close calls through unary, binary, ternary, CASE WHEN, and mappable UDF transformer parents.
• Ensure nested UDF transformers are closed when wrapped by expression transformers.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

❌ Patch coverage is 0% with 22 lines in your changes missing coverage. Please review.
✅ Project coverage is 42.00%. Comparing base (6a1961b) to head (5293cc3).

Files with missing lines	Patch %	Lines
...tion/dag/column/CaseWhenThenColumnTransformer.java	0.00%	7 Missing ⚠️
...n/dag/column/ternary/TernaryColumnTransformer.java	0.00%	5 Missing ⚠️
...ion/dag/column/binary/BinaryColumnTransformer.java	0.00%	4 Missing ⚠️
...dag/column/multi/MappableUDFColumnTransformer.java	0.00%	3 Missing ⚠️
...ation/dag/column/unary/UnaryColumnTransformer.java	0.00%	3 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             dev/1.3   #17643      +/-   ##
=============================================
- Coverage      42.00%   42.00%   -0.01%     
  Complexity       241      241              
=============================================
  Files           3612     3612              
  Lines         238367   238389      +22     
  Branches       28964    28966       +2     
=============================================
- Hits          100126   100125       -1     
- Misses        138241   138264      +23     

☔ 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.