Describe the bug

Currently we recommend folks use xlink:href in the icon components.

The xlink:href attribute of the svg <use> directive is deprecated:
https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/xlink:href

The switch is pretty straightforward - we should be able to switch references from xlink:href to just href and things will just work!

I ran into this when I was creating an icons web component using Lit, and I learned that Lit doesn't support xlink:href (because it's deprecated).

Steps to reproduce the bug

Find references to xlink:href in the repo, and update them:
https://github.com/search?q=repo%3Auswds%2Fuswds%20%22xlink%3Ahref%22&type=code

Expected Behavior

Expect no instances of xlink:href in the code

Related code

No response

Screenshots

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System setup

No response

Additional context

No response

Code of Conduct

• I agree to follow this project's Code of Conduct.
• I checked the current issues for duplicate bug reports.