fix: NodeJS bundle invalid

[GordonSmith]

safe-buffer was using require

Checklist:

• The commit message is properly formatted and free of typos.
  • The commit message title makes sense in a changelog, by itself.
  • The commit message includes a "fixes" reference if appropriate.
  • The commit is signed.
• The change has been fully tested:
  • I have viewed all related gallery items
  • I have viewed all related dermatology items
• There are no similar instances of the same problem that should be addressed
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  • I have raised new issues to address them separately

Testing:

[Copilot]

Pull Request Overview

This PR fixes a Node.js bundle issue by replacing the safe-buffer import with the native Node.js node:buffer module. This change addresses bundling problems that occurred when using the external safe-buffer dependency.

• Replaced safe-buffer import with native Node.js node:buffer module

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