feature, Update Grid responsiveness behavior and fix Tooltips overflow cuts

[Passanelli]

What does this implement/fix?

Update responsiveness breakpoints and paddings to avoid render empty values on groups cells
Move outside element to make visible outside viewport
Update mock data implementation to get random values on each render

Does this close any currently open issues?

Closes:
issue #1
issue #2
issue #3

What do the changes look like?

Storybook link

Tophat link url

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	61.63 KB (0%)	1.3 s (0%)	859 ms (-35.65% 🔽)	2.1 s
polaris-viz-cjs	222.72 KB (+0.06% 🔺)	4.5 s (+0.06% 🔺)	2.2 s (+22.03% 🔺)	6.7 s
polaris-viz-esm	180.65 KB (+0.11% 🔺)	3.7 s (+0.11% 🔺)	1.4 s (-13.19% 🔽)	5 s
polaris-viz-css	5.52 KB (+0.86% 🔺)	111 ms (+0.86% 🔺)	309 ms (+27.35% 🔺)	420 ms
polaris-viz-esnext	187.37 KB (+0.14% 🔺)	3.8 s (+0.14% 🔺)	1.5 s (+19.55% 🔺)	5.3 s