Smaller sp icon sizes do not work

[DianaProbst]

Repo file: /src/pages/uxp-api/reference-spectrum/Spectrum UXP Widgets/User Interface/sp-icon.md
Live page link (and page section): https://developer.adobe.com/photoshop/uxp/2022/uxp-api/reference-spectrum/Spectrum%20UXP%20Widgets/User%20Interface/sp-icon/
Issue description: Although the docs say the T-shirt sizes go from xxs to xl, the xxs and xs sizes are not present or errored somewho, and the fallback seems to be size l. I think xl works, but it's hard to tell from my screen. I've tested this with HelpSmall and Magnifier.