Resolve merge conflicts - keep column exclusion implementation

- Keep unified get_columns_to_exclude_from_sampling approach
- Maintain updated tests that expect column exclusion behavior
- Remove early return logic that skipped sampling entirely
- Address GitHub feedback to exclude columns, not skip sampling

Co-Authored-By: Yosef Arbiv <[email protected]>

Author: devin-ai-integration[bot]

macros/edr/materializations/test/test.sql

@@ -180,6 +180,7 @@
   {% do return(false) %}
 {% endmacro %}
 
+
 {% macro cache_elementary_test_results_rows(elementary_test_results_rows) %}
   {% do elementary.get_cache("elementary_test_results").update({model.unique_id: elementary_test_results_rows}) %}
 {% endmacro %}