feat(sidenav): subheading as ReactNode, fix mobile sidenav items padding #421#512

airikej merged 2 commits intorcTEDI-Design-System/react:rcfrom

feat/421-sidenav-side-nav-group-title-add-info-buttonTEDI-Design-System/react:feat/421-sidenav-side-nav-group-title-add-info-buttonCopy head branch name to clipboard