[Feature Request] proc default params get populated in Blueprint nodes
Currently, if I write a proc with the signature like this with default parameter values:
```nim
  ufuncs(BlueprintCallable):
    proc foodEaten(amountEaten: int32 = 1): bool =
```
The produced node doesn't have the default value of 1, filled in. It would be nice if it did that.
![image](https://github.com/jmgomez/NimForUE/assets/9814000/b0c5d77d-fefe-4323-98da-b22efe237ee9)
