DialogPortal aliased Radix's Portal directly, which calls
createPortal(children, document.body) during render. Static
prerendering (e.g. /about via InquiryDialog) has no document
global and threw "document is not defined". Wrap it so the
portal only mounts client-side.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_012Exmd6Wn13TGp1sArgK7y4
