fix: apply column-level tags for V1 table materialization (#1346)

## Summary
- Fixes #1307 — column-level `databricks_tags` were silently ignored for
tables using the V1 (default) materialization path
- The V1 table materialization was missing the `apply_column_tags()`
call that the view, V2 table, streaming table, and materialized view
materializations all have

## Test plan
- [x] `TestColumnTagsTableV1` — Added V1-specific functional test
- [x] Existing test suite passes;`TestColumnTagsTableV2` — confirms V2
path is unaffected, `TestColumnTagsViewV1` — confirms views still work
correctly

Author: sd-db

dbt/include/databricks/macros/materializations/table.sql

@@ -63,6 +63,11 @@
     {% endif %}
     {%- do apply_tags(target_relation, tags) -%}
 
+    {% set column_tags = adapter.get_column_tags_from_model(config.model) %}
+    {% if column_tags and column_tags.set_column_tags %}
+      {{ apply_column_tags(target_relation, column_tags) }}
+    {% endif %}
+
     {% do persist_docs(target_relation, model, for_relation=language=='python') %}
 
     {% do persist_constraints(target_relation, model) %}

tests/functional/adapter/column_tags/test_column_tags.py

@@ -99,3 +99,13 @@ def setup_streaming_table_seed(self, project):
 @pytest.mark.skip_profile("databricks_cluster")
 class TestColumnTagsView(ColumnTagsMixin):
     relation_type = "view"
+
+
+@pytest.mark.skip_profile("databricks_cluster")
+class TestColumnTagsTableV1(ColumnTagsMixin):
+    relation_type = "table"
+
+    @pytest.fixture(scope="class")
+    def project_config_update(self):
+        # Override MaterializationV2Mixin to test the V1 (default) materialization path
+        return {}