Add tooltips to Funnel Chart Next

[michaelnesen]

What does this implement/fix?

This PR adds back the funnel chart tooltips removed in #1785, and makes some changes to when we show the dropped off labels. The first segment will now only show a Reached this step label, with subsequent tooltips containing the dropped off data related to the previous segment.

Does this close any currently open issues?

What do the changes look like?

Storybook link

https://6062ad4a2d14cd0021539c1b-gqxlmulfcd.chromatic.com/?path=/story/polaris-viz-charts-funnelchartnext--default

• Test out showTooltip prop and ensure it works
• Ensure tabbing through chart works well

Before merging

• Check your changes on a variety of browsers and devices.

• Update the Changelog's Unreleased section with your changes.

• Update relevant documentation, tests, and Storybook.

• Make sure you're exporting any new shared Components, Types and Utilities from the top level index file of the package

[github-actions]

size-limit report 📦

Path	Size	Loading time (3g)	Running time (snapdragon)	Total time
polaris-viz-core-cjs	61.73 KB (0%)	1.3 s (0%)	959 ms (+1.82% 🔺)	2.2 s
polaris-viz-cjs	229.56 KB (+0.36% 🔺)	4.6 s (+0.36% 🔺)	2.2 s (+2.72% 🔺)	6.8 s
polaris-viz-esm	185.84 KB (+0.34% 🔺)	3.8 s (+0.34% 🔺)	1.3 s (-17.73% 🔽)	5.1 s
polaris-viz-css	5.82 KB (+1.76% 🔺)	117 ms (+1.76% 🔺)	284 ms (-9.38% 🔽)	400 ms
polaris-viz-esnext	193.04 KB (+0.4% 🔺)	3.9 s (+0.4% 🔺)	1.6 s (+20.6% 🔺)	5.5 s

[mollerjorge]

Is this function needed here? 🤔

[michaelnesen]

This is because the TooltipContentContainer accepts the children prop as a function to pass the activeColorVisionIndex to it's child components, however in the funnel chart tooltips we don't need the color vision functionality as the tooltip uses fixed colors.

[mollerjorge]

Left some minor comments but overall looks great.

I think for open funnels we won't be showing any tooltips, so maybe its worth adding a prop to toggle between showing/hiding tooltips.