PDF Export: No TOC at Chapter/Part start

[xolotl]

PDF exports don't currently output a table of contents (TOC) for each Chapter/Part on a page at the start of that Chapter/Page, which is now just a blank page with the Chapter/Part title. A style treatment for such a TOC is on order, but we need to output it for it to be styled.

Bonus nice to have: TOC can understand and report page numbers of first PDF pages of pages in Chapter/Part.

The TOC for this Chapter/Part would be:

The web view of the course also doesn't have a TOC, but we don't have users navigate to view Chapters/Parts, so we don't notice, like on this chapter/part:
https://courses.candelalearning.com/collegesuccess2x30master/part/you-and-your-college-experience/

In the PDF export, there is just a blank page at the start of each chapter/part with the chapter/part title: