[v3] RadioButtonGroupInput does not set Mui-Error on error text

[natrim]

RadioButtonGroupInput errors are not red (unlike CheckboxGroupInput)

repro: https://codesandbox.io/s/simple-wsknw

Step to reproduce:

1. open edit post
2. try to save without setting the RadioButtonGroupInput
3. error is not red

[djhi]

Thanks for reporting !

[fzaninotto]

Fixed by #3735

[clonez]

Fixed by #3735

Hi is this committed on the latest react-admin package (4.5.1)? I don't seemed to see the changes, the required validation still not red and doesn't have .mui-error

[fzaninotto]

This was fixed in 3.0. If you see a regression in 4.x, please open a new issue, following the issue template.