Some pages have duplicate sections

[kfranqueiro]

The following pages have multiple sections with the same id and heading.

In one case, the XSLT build process preserves both sections separately but the table of contents links to the first, which contains duplicate content from the previous section; the Eleventy build process in #3917 correctly removes the earlier section to handle this particular issue until we resolve it.

• 2.5.3 Label in Name: Benefits
  • The first of these is a subsection inside Intent, containing a partial repeat of Intent's content, which should be removed

In the other cases below, both build processes merge the duplicate sections together. The Eleventy process also prints a warning about it.

• F61: Tests
  • Each of these seems to be unique; unsure whether one was intended to be removed
• H63: Resources, Related
  • These duplicate sections contain essentially the same content; one of each should be removed

[kfranqueiro]

FYI, I've addressed the Label in Name / Benefits instance in #3939, since that involved looking at nested Benefits sections anyway.