[Bug]: Halfling has an extra empty trait in advancements

### What happened?

There's an extra Trait advancement that is empty on the Halfling Species.

<img width="237" height="185" alt="Image" src="https://github.com/user-attachments/assets/c8c8cdd8-2023-4dd1-aa90-21e31693c79f" />

### What package are you reporting this for?

Dungeons & Dragons Player's Handbook

### Version

2.0.0

### Relevant log output

```shell

```