Center the text in the error layout This CL centers the text in the error layout, displayed when the users data can't be loaded. It also renames the function that displayes the error layout to make it more consistent with other layouts. Bug: b/375597327 Change-Id: I91d4d0ffb13260f642fb26d0eafa14be68c16cd0 Test: manual Flag: android.multiuser.multiuser_widget