Noirtam

Add optgroup possibily for select-control=select and data=json

2

**🤔Type of Request** - [ ] **Bug fix** - [x] **New feature** - [ ] **Improvement** - [ ] **Documentation** - [ ] **Other** **🔗Resolves an issue?** **📝Changelog** - [...

Error flush transaction

2

### Expected Behavior Since migration 6 (maybe 7.0.0-RC1) to 7.0.0, I have an error hibernate when I'm trying save two domains in the same transaction : ```groovy Utilisateur.withNewTransaction { //Creation...