Fix regression of leader line drawing and re-draw on hover for non-dynamic leader lines
Fix regression of leader line drawing and re-draw on hover for non-dynamic leader lines

hms-dbmi/4DN_matrix-viewer,hms-dbmi/4DN_matrix-viewer,hms-dbmi/higlass,hms-dbmi/4DN_matrix-viewer,hms-dbmi/higlass,hms-dbmi/higlass,hms-dbmi/higlass