Add visual feedback indicating an issue in node

Discussion started in issue: https://github.com/ossia/score/pull/1647

**Bespoke editor implementation** :

 ![Image](https://github.com/user-attachments/assets/7ee7bdbc-dac9-45ca-be8b-75212aac0be4)

Possible implementation in score scenario editor :
![Image](https://github.com/user-attachments/assets/7f02ae2c-f0e0-4f55-a60c-336855689b09)

