FormBuilderRadioGroup: New RadioGroup widget

[deandreamatias]

Is there an existing issue for this?

• I have searched the existing issues

Package/Plugin version

10.0.1

What you'd like to happen

On next Flutter stable versions, will be introduce RadioGroup widget.
Need to migrate FormBuilderRadioGroup to use this new widget
https://docs.flutter.dev/release/breaking-changes/radio-api-redesign

Alternatives you've considered

No response

Aditional information

No response