Feature Request: Support disabling autolinks for specified URL protocols

[Kenneth-Kuo]

Problem Statement

Need a way to turn off autolink for certain protocols like mailto. Maybe add a prop like disableAutolinkProtocols={['mailto']}.
Thanks.

Proposed Solution

Add a new prop (e.g. disableAutolinkProtocols) to Streamdown that accepts an array of URL protocols to disable autolinking for.
Internally, customize or extend the remark plugin (remark-gfm) to skip autolinking for the specified protocols (e.g. mailto).
This gives users fine-grained control over which protocols get autolinked.

Alternatives Considered

No response

Use Case

Priority

No response

Contribution

• I am willing to help implement this feature

Additional Context

No response