Bring every back / skip / next / chevron / pager button on the
v1.4.25 onboarding wizard up to the 44x44 px WCAG 2.5.8 floor. The
previous `size="sm"` buttons measured 32 px tall, the chevron icons
were 32 px square, and each dot pager target was 10 px square — all
well under the target-size minimum for thumb-driven flows.
Carousel slides now derive their accessible name from the slide
title via `aria-labelledby`, so the polite live region (which
mirrors "Slide N of M") is the single source for position
announcements. The previous markup announced position twice on every
swipe: once from the slide's own `aria-label`, again from the
live region.
Marc-André Bombeck