Implement animations for LineChart data set changes

[chris-shopify]

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Context

Designs

Requirements

Considerations

What this is not

[chris-shopify]

To help a bit I played in storybook and deleted data to see if they are animated:

• data change animated: bar, sparkbar, simplebar, simple normalized, sparkline
• data change NOT animated: stacked area, line
• no idea: doughnut, funnel

[krystalcampioni]

Closed by https://github.com/Shopify/polaris-viz/pull/1296 Other charts tracked in separate issues