We could use:
https://github.com/mozilla/pdf.js/blob/c3d08580627471432a6ad0b2fdb948df64126afa/src/display/api.js#L929

and look at bit 4.

The following pdf:
https://orimi.com/pdf-test.pdf
is not editable in neither Acrobat nor Edge nor Foxit and nor Okular.
this.pdfScriptingManager.dispatchDidPrint();
    if (this.printService) {
      this.printService.destroy();
      this.printService = null;
      this.pdfDocument?.annotationStorage.resetModified();
    }
    this.forceRendering();
  },
  rotatePages(delta) {
    this.pdfViewer.pagesRotation += delta;
    
    
  },
  requestPresentationMode() {
    this.pdfPresentationMode?.request();
  },
  triggerPrinting() {