story: evaluate polyfill for popover and CSS anchor positioning

[kyubisation]

Feature Description

I would like to evaluate the popover and CSS anchor positioning polyfills.

The popover attribute is already available in Chome and Edge, but still in progress in other browsers: https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/popover

CSS Anchor Positioning is now a Public Working Draft, but will probably take a bit longer until it is available in browsers: https://developer.chrome.com/blog/tether-elements-to-each-other-with-css-anchor-positioning/

https://www.npmjs.com/package/@oddbird/popover-polyfill
https://www.npmjs.com/package/@oddbird/css-anchor-positioning

Definition of Done

• Tested with a overlay component (e.g. <sbb-menu>)
• If evaluation is positive, create follow-up story to adopt and present to team

[kyubisation]

@federicoisepponfincons, @dauriamarco What was the result here?

[kyubisation]

We will wait for the native implementation of the popover.
As for the CSS Anchor Positioning; The polyfill seems to be static, so we probably also have to wait until it is natively available.