openapi generate an empty src directory without error

**API Platform version(s) affected**: 3.3.11

**Description**  
directory "src" created but empty

**How to reproduce**  
![image](https://github.com/user-attachments/assets/a2f62ce6-ff08-49b3-8f18-3cf4d865b734)
![image](https://github.com/user-attachments/assets/ae3bb375-c2bf-4e81-bc14-859e6988a62e)
![image](https://github.com/user-attachments/assets/78990a14-8a44-4710-8cfb-498769747513)


