Prevent 'paged-*' from being added to body classes on 404 error pages.

props psoluch.
see #16468.
Built from https://develop.svn.wordpress.org/trunk@28249


git-svn-id: http://core.svn.wordpress.org/trunk@28077 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Prevent 'Page %s' from being added to page title on 404 error pages in bundled themes.

props psoluch, rob1n.
fixes #16468.
Built from https://develop.svn.wordpress.org/trunk@28250


git-svn-id: http://core.svn.wordpress.org/trunk@28078 1a063a9b-81f0-0310-95a4-ce76da25c4cd