Darkside: Added migration-support for border-radius token update. (#3784)

Border-radius: Removed rounded-value based on aksel token-config. Use built-in values from tailwindcss as replacement Tailwindcss docs. (#3784)

Box: Add support for new radius-tokens that will replace borderRadius-tokens when darkside is set as main. (#3784)

ConfirmationPanel: Now tagged as deprecated. See documentation for more information. (#3789)

Darkside: Components now use new radius-tokens, replacing border-radius-tokens. (#3784)

Border-radius: Add new radius-tokens that will replace border-radius-tokens. T-shirt sizing is replaced with numbers reflecting its value. --a-border-radius-medium is now --ax-radius-4. Until darkside-theming is mainlined, we will continue to support both new and legacy border-radius side by side. (#3784)