Compare tab items tab scroll height is incorrect and hides things

### Check version - [x] I'm running the latest version of Path of Building and I've verified this by checking the [changelog](https://github.com/PathOfBuildingCommunity/PathOfBuilding/blob/master/CHANGELOG.md) ### Check for duplicates - [x] I've checked for duplicate open **and closed** issues by using the search function of the [issue tracker](https://github.com/PathOfBuildingCommunity/PathOfBuilding/issues?q=is%3Aissue) ### What platform are you running Path of Building on? Windows ### How is Path of Building expected to behave? I'd expect to be able to scroll to the actual end of the items list. ### How does Path of Building behave? <img width="1207" height="359" alt="Image" src="https://github.com/user-attachments/assets/a7a3b743-77a6-41b6-a72a-51f2946a152a" /> Cut off. The scroll bar behaviour is also strange as it doesn't go to the end. Scrolling down also doesn't seem to work. Mostly a problem in expanded mode ### How to reproduce the issue _No response_ ### PoB for PoE1 build code ```shell ``` ### Screenshots _No response_