Add onSaveInstanceState support for GridPicker

Before: https://drive.google.com/file/d/1BeiF2qZiGCNnA4XhXRdAJz_0H54qJdVb/view?usp=sharing
After: https://drive.google.com/file/d/1F1YCoLtLrmG4CH2WPY6lJ0ZbdY1Z7AWc/view?usp=sharing

Test: Manually
Fixes: 157734889
Change-Id: Iee93f058fadd7891536cf0d5e745261a31778470
4 files changed