Replaced all bare `FC<{ className?: string }>` and `FC<HTMLAttributes<...>>`
wrappers that only forwarded `className` with `faIcon()` from
`src/lib/icon-wrapper.ts`, ensuring props like `data-icon` needed by the
Button component's CSS selector `*:data-icon:size-5` are correctly forwarded.
Also widened `NavItemBaseProps.icon` and `NavItemType.icon` prop types to
`FC<Record<string, any>>` to stay compatible with `faIcon()` return type.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
