fix cola not stoppable in infinite mode
fix cola not stoppable in infinite mode

soomin-maeng/cytoscape.js,KonstantinShemyak/cytoscape.js,KonstantinShemyak/cytoscape.js,rlugojr/cytoscape.js,rlugojr/cytoscape.js,soomin-maeng/cytoscape.js