Modify fuzz all functions to fuzz all functions with valid inputs

Currenlty, the `fuzz all functions` function is fairly primitive and will generate the same fuzzing statements if no new functions are added.

These functions are currently in a weird order (see attachment). It might be nice if the for loop looks more like
```
for function in scalar_functions:
generate_sql(function);
```

It could also be nice if the functions are applied as a where condition, that way they are tested on different combinations of all_types inputs.

[clog_functions.txt](https://github.com/user-attachments/files/16678146/clog_functions.txt)