A Dynamic Panel changes its number when a new panel is added

[JaneSjs]

T21733 - Question Index Issue in Dynamic Panel
https://surveyjs.answerdesk.io/internal/ticket/details/T21733

---

Consider the following sample:

{
  "logoPosition": "right",
  "pages": [
    {
      "name": "page1",
      "elements": [
        {
          "type": "text",
          "name": "question1"
        },
        {
          "type": "paneldynamic",
          "name": "question2",
          "templateElements": [
            {
              "type": "text",
              "name": "question3",
              "title": "Text"
            }
          ]
        }
      ]
    }
  ]
}

A dynamic panel has the 2. index. Add a new dynamic panel: the index is changed to 1..
https://github.com/user-attachments/assets/e64e929e-f159-4155-8d77-902195cbe971