Throb animation is called on graph nodes even when the search query doesn't change

[fbarl]

To reproduce (on Chrome):

1. Open a big topology in graph view mode
2. Do a broad search query, like "a", without hitting Enter
3. Hover over some nodes
4. Observe how a lot of nodes get animated (basically each time after mouse leaves a node)

It's a weird bug because the nodes actually don't get rerendered when they are animated, so the question is why the CSS animations get triggered. I think it has to do with sorting of nodes we do in NodesChartNodes, as the bug is not there when we don't sort them. So permuting the list of DOM elements seems to trigger CSS even when no React rerendering of elements takes place. An obvious fix might be to do the whole animation from JS instead of CSS.