Keep commit information after clicking on a node in chart

I think it would be helpful if the commit information was kept selected and shown after clicking on a node in the chart:

Say I want to navigate to a PR that introduced increase in build size. I click on the node on chart, then move my mouse to the PR link. However, the commit info is hidden as the mouse was moved away from the node.

Start by running the chart and tracing how clicking a node displays commit information and how moving the pointer hides it. The change is done when selecting a node keeps its commit information visible while the user moves to and activates the PR link.

Written by the indexing model from the issue text.