Sitemap: use the full path for child pages
Problem
For pages nested under a parent page, the sitemap lists the page's own slug instead of its full path (full_slug). Every child-page URL in the sitemap answers with a redirect, which search engines report as a sitemap error and crawl more slowly.
Proposal
Use full_slug (the full public path) for every page in the sitemap, and make sure each URL in the sitemap answers 200, with no redirect.
Workaround today
We keep all pages at the root level and give up on nested page structure.
Pending