Fix variable usage in new language install choices. see #28577.

Built from https://develop.svn.wordpress.org/trunk@28779


git-svn-id: http://core.svn.wordpress.org/trunk@28592 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Narrower screen when choosing a language. see #28577.

Built from https://develop.svn.wordpress.org/trunk@28780


git-svn-id: http://core.svn.wordpress.org/trunk@28593 1a063a9b-81f0-0310-95a4-ce76da25c4cd