/** Keep hit testing in the original layout while rows make room for the lifted item. */export function threadDragGapOffset(  rowOffset: number,  sourceOffset: number,  sourceHeight: number,  insertionOffset: number,): number {  if (rowOffset === sourceOffset) return 0;  if (insertionOffset <= sourceOffset) {    return rowOffset >= insertionOffset && rowOffset < sourceOffset ? sourceHeight : 0;  }  return rowOffset > sourceOffset && rowOffset < insertionOffset ? -sourceHeight : 0;}