[5.10.5]: Border radius mismatch for thumbs in element index

### What happened? ### Description Thumbs in the element index have a border-radius of var(--radius-sm) but the wrapper element chip has a border radius of var(--radius-lg) wich makes the left side border radius be 2px more than the right <img width="112" height="105" alt="Image" src="https://github.com/user-attachments/assets/8a467d02-d8f6-4f0e-aa4f-5ec93e459625" /> ### Steps to reproduce 1. ### Expected behavior ### Actual behavior ### Craft CMS version 5.10.5 ### PHP version _No response_ ### Operating system and version _No response_ ### Database type and version _No response_ ### Image driver and version _No response_ ### Installed plugins and versions -