lock: update keyboard switch ui

1.fixed keyboard switch list cannot show all the keyboard name
2.update keyboard position and width

Change-Id: I23100762f8f5ede99a1700de7e66ae6888253d3b
tower:https://tower.im/projects/8a6342c556be4c4eb898fdd7fd6fcb2f/todos/58e9dbf8948a48beb24936997587a462/