update checkbox based on FAS API

Before this CL, we assumed all the apps in this page were restricted and
didn't consider that user may uncheck one and rotate the screen.

In this CL, when we create checkbox, we will update the state through
FAS API to make sure checkbox is up-to-date.

Change-Id: I4e89908591f0688b4170806db4b6631bf921f2e9
Fixes: 78161466
Test: RunSettingsRoboTests