Changing statistic to same value triggers change chat log message

Similar issue as #1049, "changing" a stat to the same value as it currently is will flash a chat message that says "0 change has been made". This is pretty unnecessary clutter, and the button should likely just be disabled/not trigger a chat message at all.

https://github.com/user-attachments/assets/282dcac4-ad2f-4f92-b362-d4adc884d2ff