feat: DSYS-476 Migrate AvatarIcon to ADR-0003 and ADR-0004#996

cursor[bot] wants to merge 2 commits intomainMetaMask/metamask-design-system:mainfrom

cursor/enum-shared-type-migration-6dcdMetaMask/metamask-design-system:cursor/enum-shared-type-migration-6dcdCopy head branch name to clipboard