fix:widget name validation

[saicharan-zemoso]

issue: 22259

added the validation to check if the widget name start with a number

when the widget name starts with a digit then this error is thrown:

and when the error is thrown the name of the widget is not updated. if the widget name is valid:

similarly this condition is checked while updating any widget name.

cypress test video:

https://github.com/user-attachments/assets/05b853f8-483a-4326-9d66-1d515e4d672a

Summary by CodeRabbit

• New Features

  • Introduced validation to prevent entity names from starting with a number. Users will now receive an error if trying to rename an entity with a name that begins with a digit.
  • Enhanced title editing functionality in the Property Pane to improve user interaction when input begins with a digit.

• Tests

  • Added tests to ensure CheckboxGroup cannot be renamed with names starting with a digit.
  • Implemented test cases for the widget name update functionality, covering various scenarios for name inputs.