Save themed icon switch's chcked state in savedInstanceState

Add section views with tasks in the message queue (view#post()) running
separately would see themed icon switch's checkd state changing quickly.
Save the state to the savedInstanceState and restore it could prevent
this phenomenon.

Bug: 192200516
Test: Manual
Change-Id: I04309bd634e2b9a240570fe304dfa34372c2b6df
2 files changed