Flicker when dragging an item into a single-item list in Multiple Lists example

In the React Sortable Multiple Lists Storybook example, an existing item flickers when another item is dragged into a list that currently contains only one item. This is most noticeable in Safari. **Links** - https://main--5fc05e08a4a65d0021ae0bf2.chromatic.com/?path=/docs/react-sortable-multiple-lists--docs - https://dndkit.com/react/guides/multiple-sortable-lists/#making-the-columns-sortable **Steps To Reproduce** 1. Open `react-sortable-multiple-lists` in Storybook. 2. Use the example after the “Getting Started” section. 3. Make the middle column contain only `B0` by moving any extra item out of it if needed. 4. Drag `A1` from the first column into the middle column. 5. Hover/drop `A1` just below `B0`, near the second position. Screen Recordings

https://github.com/user-attachments/assets/5f3d32f0-d591-45e2-ac2a-30aa104a335d https://github.com/user-attachments/assets/78fc8deb-c6cd-4bc7-8d53-a206672d472c

**Actual Result** `B0` flickers or appears to jump while `A1` is positioned near it. **Expected Result** `B0` should remain visually stable while `A1` is dragged into the second position.