Bundled Themes: Twenty Seventeen pagination links don't appear for home pages.

Fixes issues where pagination does not work on the page that is set to the home page.

Props dimitris.m, laurelfulford, poena, ianbelanger, samful.
Fixes #39685.
Built from https://develop.svn.wordpress.org/trunk@48064


git-svn-id: https://core.svn.wordpress.org/trunk@47831 1a063a9b-81f0-0310-95a4-ce76da25c4cd