This change replaces "Current theme" with "Active theme" in various DocBlocks for better consistency with user-facing strings. Follow-up to [52580]. Props Presskopp, audrasjb, costdev. Fixes #54831. See #54770. Built from https://develop.svn.wordpress.org/trunk@52610 git-svn-id: http://core.svn.wordpress.org/trunk@52198 1a063a9b-81f0-0310-95a4-ce76da25c4cd