Context.getActivityToken is introduced since O.
To align with MR2 and avoid unnecessary merge conflict,
pass the activity token from activity to controller.
Test: 1. make RunSettingsRoboTests
2. Manual Test
a. Start SET_NEW_PASSWORD intent in user 0, set password.
User 0 password is set.
b. Start SET_NEW_PASSWORD intent in work profile, set password.
work profile password is set.
Bug: 32959373
Change-Id: I8577752d446a7c395ad30417f8c0c832f951d7b3
e0405fc4f2