greeter/lock::fixed the switch layout select list hasnot hover status

tower:https://tower.im/projects/8a6342c556be4c4eb898fdd7fd6fcb2f/todos/e45d0da79771448faa99029f7f5af72e/

Change-Id: Ic2283c199f1f49aa39a45c90ba57b6d8f566900b