All components: interactive prop does not reliably suppress clickable legend

[bobular]

This is to be looked at after #150

If you look at a story with a plot with interactive: false, such as /story/plots-histogram--some-covid-data then mouse-overs and clickable legend are disabled, as desired.

If you then switch to interactive: true using storybook controls, the mouse-overs and clickable legend are activated.

All good so far!

Then if you set interactive: false again, the mouse-overs stop (as desired) but the clickable legend is still active (not desired).

Behaviour confirmed for histogram and pieplot.

See also VEuPathDB/web-eda#172 - possibly solved by disabling clickable legend at all times (if we cannot maintain the (plotly) state in our application) - see https://plotly.com/javascript/reference/layout/#layout-legend-itemclick