Feature request: configurable allowDangerousHtml / optional raw HTML rendering

[devyao]

Summary

StreamMarkdown passes allowDangerousHtml: false to remark-rehype, which strips raw HTML in Markdown. That option is not exposed as a component prop, so consumers cannot enable HTML rendering without patching the library.

Context / question

1. Is disabling raw HTML intentional as the default security posture? (Understood if yes.)
2. Would you consider exposing this (e.g. allowDangerousHtml?: boolean, default false) so trusted content can opt in?

Current behavior

In src/StreamMarkdown.ts, remarkRehype is used with a fixed option:

.use(remarkRehype, { allowDangerousHtml: false })