fix: Revert "fix: don't strip SQL comments in Explore (#28363)" (#28567)

tests/integration_tests/core_tests.py

@@ -540,9 +540,7 @@ class TestCore(SupersetTestCase):
             database=get_example_database(),
         )
         rendered_query = str(table.get_from_clause()[0])
-        assert "comment 1" in rendered_query
-        assert "comment 2" in rendered_query
-        assert "FROM tbl" in rendered_query
+        self.assertEqual(clean_query, rendered_query)
 
     def test_slice_payload_no_datasource(self):
         form_data = {