Describe the bug
When viewing a collection, if the viewport is large enough to display 30 items at once, the list stops loading additional items and no scrolling is available.

If the browser window is resized to a smaller width or height so that fewer items are visible, scrolling becomes possible and additional items load as expected. After that, resizing back to a larger viewport does not reintroduce the issue.

This suggests the initial layout prevents the scroll trigger when 30 items fit within the viewport.

To Reproduce
Steps to reproduce the behavior (all steps in Maintainerr):

1. create a big collection with more than 30 items
2. maximize your browser and go to that collection
3. you should see only 30 items
4. now make the browser window smaller, so that only 5-10 items fit in the viewport
5. start scrolling down and the remaining items should show up

Expected behavior
Items should load when scrolling down, regardless of how many items are initially visible in the viewport.

Device

• Docker: maintainerr/maintainerr:latest (3.4.1)
• Version: 3.4.1 (latest-e0c259d)
• Server: Plex
• Browser: Chrome 147.0.7727.56 on macOS 26