A Rating Scale question has different values in Designer and Preview

[JaneSjs]

T17060 - Issues with Rating questions in online survey creator
https://surveyjs.answerdesk.io/internal/ticket/details/T17060

---

Rating Scale values appear differently in design and preview mode.

To reproduce the issue, follow these steps.

1. Create a Rating scale;
2. Set Maximum rating value to 20;
3. Set a step to 2;
4. In designer, a scale appears as follows:
   
5. Switch to Preview - a scale appears differently:
   
6. The resultant survey JSON:

{
 "pages": [
  {
   "name": "page1",
   "elements": [
    {
     "type": "rating",
     "name": "question1",
     "rateCount": 10,
     "rateMax": 20,
     "rateStep": 2
    }
   ]
  }
 ]
}