text: Title: [Feature Request] tabIndex of Div should also accept number type
  Body: In the origin React, parameter `tabIndex` could accept number type:
  ![image](https://github.com/plotly/dash/assets/49147660/d23f2603-be1e-4109-a09e-8ab0688200e5)
  
  It would be better to add number type support for `tabIndex`:
  
  ![image](https://github.com/plotly/dash/assets/49147660/bae3d973-6a7e-4b10-81ab-2e4193e23932)
  