defaultValueExpression doesn't apply after setting survey.data

[andrewtelnov]

The following code doesn't work correctly:

  const survey = new SurveyModel({
    elements: [
      { type: "text", name: "q1" },
      { type: "text", name: "q2" },
      { type: "text", name: "q3", defaultValueExpression: "{q1} + {q2}" }
    ]
  });
  survey.data = { q1: 1, q2: 2, q3: 3 };
  survey.setValue("q1", 3);

"q3" value should be 5 instead of 3. Howere model believes the data was modified by an end-user and the data is not updated.