Visualize Single Attribute on Graph/Chart

### Problem Statement

Allow for isolating a single attribute in a stacked bar/line graph so that only its data is displayed. Currently, clicking the breakdown attribute removes it from the graph, but there’s no way to show only that attribute (intuition is that double-clicking to isolate would make sense).

### Solution Brainstorm

_No response_

### Product Area

Dashboards

No file or test is named. Start by tracing the dashboard stacked bar and line chart breakdown interaction, especially the existing click behavior that removes an attribute; confirm how isolation should work for both chart types and define done as displaying only the selected attribute without removing it.

Written by the indexing model from the issue text.