Update grouped bar and scatter chart

[LiamConnors]

With the current example, the order of the bar groups changes if you deselect the scatter traces.
This PR sets a category_order to keep them consistent, a range to keep the range of the y axis consistent, and groups the Smoker/non-smoker traces together in the legend.

Documentation PR

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• [] The random seed is set if using randomly-generated data in new/modified examples
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• fig = <something> call is high up in each new/modified example (either px.<something> or make_subplots or go.Figure)
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