fix: Measure offsetHeight vertical overflow (#3061)

Make sure to measure `offsetHeight`. This was missed during this [PR](https://github.com/Workday/canvas-kit/pull/3035/files#) that added the vertical overflow behavior.

[category:Components]

Co-authored-by: manuel.carrera <[email protected]>

modules/react/collection/lib/useOverflowListTarget.tsx

@@ -30,7 +30,7 @@ export const useOverflowListTarget = createElemPropsHook(useOverflowListModel)((
           parseFloat(styles.marginLeft) +
           parseFloat(styles.marginRight),
         height:
-          localRef.current.offsetWidth +
+          localRef.current.offsetHeight +
           parseFloat(styles.marginTop) +
           parseFloat(styles.marginBottom),
       });