fix: escape katex content when katex not loaded to prevent xss
When KaTeX is not yet loaded (window.katex undefined), math content would be rendered as raw HTML, creating potential XSS vulnerabilities from malicious formulas. This fix ensures the content is properly escaped when KaTeX is unavailable.
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fix: escape katex content when katex not loaded to prevent xss
When KaTeX is not yet loaded (window.katex undefined), math content would be rendered as raw HTML, creating potential XSS vulnerabilities from malicious formulas. This fix ensures the content is properly escaped when KaTeX is unavailable.