Radix's DialogOverlay wraps content in RemoveScroll, which blocks wheel
events on elements not registered as DialogPrimitive.Content. Since the
onboarding wizard uses a custom layout (not DialogContent), scroll events
on the form container were being swallowed. Replacing with a plain div
preserves the background appearance without the scroll-locking behavior.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>