Expressions are not re-evaluated when they depend on a survey object property and that property changes

[andrewtelnov]

The following JSON doesn't work correctly on changing survey locale and on changing survey readOnly proprety.

{
    elements: [
      { type: "text", name: "q1", visibleIf: "{$survey.locale} = 'de'" },
      { type: "text", name: "q2", visibleIf: "{$survey.readOnly} = false" },
      { type: "radiogroup", name: "q3",
        choices: ["item1",
          { value: "item2", visibleIf: "{$survey.locale} = 'de'" },
          { value: "item3", visibleIf: "{$survey.readOnly} = false" }] }
    ]
  }