Do not use hidden UserManager hidden APIs

- isUserRunning(userId): replaced with isUserRunning(UserHandle.of(userId))
- getUsers(true): replaced with getSerialNumbersOfUsers(true) and
  getUserForSerialNumber(setialNumber)

Bug: 137202333
Test: make
Change-Id: I34103353d4e703bff2fc09925f91d3f2dd93150d
2 files changed