[Gazebo] Make clicking file in sunburst open file in file explorer

[spalmurray-codecov]

From codecov/gazebo#3783

Spencer: I feel like if I click on a leaf node, it should open the file. This is already a feature but I have to go click the link underneath the sunburst. Thoughts?

Nick: I like the idea, but it's a bit beyond the scope of this effort. Can you make up a ticket, and we can look at adding that in down the line?

The breadcrumb where you are clicking now, lives outside of the Sunburst chart, so would also require a tad of exploring to figure out what exactly to do.