Refa: empty ids means no-op operation (#13439)

### What problem does this PR solve?

Empty ids means no-op operation.

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)
- [x] Documentation Update
- [x] Refactoring

---------

Co-authored-by: writinwaters <cai.keith@gmail.com>

test/testcases/test_web_api/test_dataset_management/test_dataset_sdk_routes_unit.py

@@ -472,14 +472,8 @@ def test_delete_route_error_summary_matrix_unit(monkeypatch):
     assert res["data"]["errors"], res
 
     req_state["ids"] = None
-    monkeypatch.setattr(
-        module.KnowledgebaseService,
-        "query",
-        lambda **_kwargs: (_ for _ in ()).throw(module.OperationalError("db down")),
-    )
     res = _run(inspect.unwrap(module.delete)("tenant-1"))
-    assert res["code"] == module.RetCode.DATA_ERROR, res
-    assert res["message"] == "Database operation failed", res
+    assert res["code"] == module.RetCode.SUCCESS, res
 
 
 @pytest.mark.p2