fix: support application/octet-stream for base64 images in DocMeasure

[nayneshrathod]

No description provided.

[nayneshrathod]

fix: support application/octet-stream for base64 images

Updated the regex in convertIfBase64Image within DocMeasure.js to properly identify and parse base64 image strings that are provided with the application/octet-stream MIME type instead of standard image types. This ensures these images are efficiently cached and processed by PDFKit without throwing an "Unknown image format" error.

[Copilot]

Pull request overview

Updates DocMeasure’s base64 image detection to also accept data:application/octet-stream;base64,... data URLs, allowing images supplied with a generic MIME type to be processed like other inline images.

Changes:

• Expanded the convertIfBase64Image data-URL regex to match application/octet-stream in addition to common image/* types.

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