Clean up animation duplicates after exporting animations

Exporting animations seems to duplicate them in the action list, fast64 should be cleaning them up. This is in OoT mode, I'm not sure if the same happens in SM64 mode.

<img width="340" height="279" alt="Image" src="https://github.com/user-attachments/assets/05c960af-da92-469e-99d4-c6ca24edbf54" />