Issue Summary

PDF export in legacy editor is not following renderModes directive for dynamicContentMacro.

Steps to Reproduce

 1. Install a connect app with dynamicContentMacro and renderModes defined for pdf, for example 

{
  "url": "/pages/cc/macro",
  "name": {
    "value": "Macro Editor"
  },
  "key": "nf-connect-macro-editor",
  "renderModes": {
    "default": {
      "url": "/pages/cc/macro"
    },
    "pdf": {
      "url": "/index.html"
    }
  },
} 

 2. Insert the macro in a Legacy Editor page.
 3. Export the page to PDF.

Expected Results

The pdf page should show the content from pdf url in renderModes.

Actual Results

The pdf page polls the main url instead. And, in some cases this cause the macro to not be displayed at all.

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available