Fix the passing of commenter cookie data to the comment API so that we don't try and fetch all unapproved comments for users with no-email address when we only have an author.

Fixes #19623

Built from https://develop.svn.wordpress.org/trunk@30547


git-svn-id: http://core.svn.wordpress.org/trunk@30536 1a063a9b-81f0-0310-95a4-ce76da25c4cd