fix(solid): remove SVG nesting for toast icons

[valooford]

Problem
Toast icon looks cropped in Solid.

Reason
Icon is rendered as nested SVGs.

Compared to React's single SVG.

asChild does the trick in React.

// components/react/src/components/ui/icon.tsx
export const Icon = styled(ark.svg, icon, {
  defaultProps: { asChild: true },
})

// components/solid/src/components/ui/icon.tsx
export const Icon = styled(ark.svg, icon)

After