Dashboard - Widget pop up should re-order rows based on order of that hovered time

### Problem Statement

When I hover over the graph it keeps surfacing these 0 values in the widget so it doesn't show me the actual topmost dataline that is highest at that moment.

### Solution Brainstorm

Ideally it should update the order based on where I hover over in the graph

### Product Area

Dashboards

Start by tracing the Dashboards widget pop-up and the graph hover behavior described in the issue. Verify how rows are currently ordered at the hovered time and define done as showing the highest active data lines first instead of surfacing zero values; the issue names no files or tests, so locating the relevant entry point is part of the work.

Written by the indexing model from the issue text.