Line Chart
Displays one or more aligned indexed series. A single public entry point handles both single- and multi-line data. Selection always refers to a source X index shared by all series. In compact mode, user interaction selects the middle source index represented by a bucket; programmatic source selection highlights the bucket containing that index.
interactionEnabled gates gesture-based selection. It has no effect in LineChartRenderMode.Timeline, which is a non-interactive, continuously updating presentation mode.
renderMode controls only the update transition. In LineChartRenderMode.Timeline the strip shifts horizontally as new points arrive; gestures are not supported regardless of interactionEnabled.
animationDuration is typed as Duration (for example
420.milliseconds); the value is carried as a typed duration through the rendering pipeline and converted to milliseconds only at the animation spec boundary.