Revert "phpcs: Convert var to public in SpecialUserlogin.php"

This reverts commit 343382e4b783d528d7b1a3153681463c4c6a4597

Change-Id: I5609ab996a178d58a532d6a0bfc3d952d0629c1c
Merge "Revert "phpcs: Convert var to public in SpecialUserlogin.php""