Logto's secretQrCode is a data:image/png;base64 URI, not an otpauth://
string. QRCodeSVG crashes trying to encode it ("Data too long"). Now
renders data URIs as <img> and only uses QRCodeSVG for otpauth:// URIs.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
