actions: Discord webhook seems to fail at slicing up repeating emoji

thanks marcelo

![Image](https://github.com/user-attachments/assets/d0fc20dc-e799-4d65-b2bb-449f5cb09208)

![Image](https://github.com/user-attachments/assets/bd18dee2-2d5e-4408-ab43-71558d57bd3a)