fix(snowflake): opt-in denormalization of column names (#24982)

tests/integration_tests/import_export_tests.py

@@ -122,7 +122,10 @@ class TestImportExport(SupersetTestCase):
     def create_table(self, name, schema=None, id=0, cols_names=[], metric_names=[]):
         params = {"remote_id": id, "database_name": "examples"}
         table = SqlaTable(
-            id=id, schema=schema, table_name=name, params=json.dumps(params)
+            id=id,
+            schema=schema,
+            table_name=name,
+            params=json.dumps(params),
         )
         for col_name in cols_names:
             table.columns.append(TableColumn(column_name=col_name))