Apply WindowTestRunner to more WM tests

- Remove the manual locking inside test methods.
- Replace test thread with display thread for
  ActivityTaskManagerService, so it is closer to real case.
- Use null thread for ActivityManagerService so the modules
  outside WM won't be created, including:
    ActivityManagerConstants, ActiveServices, OomAdjuster,
    IntentFirewall, PendingIntentController

Bug: 140284973
Test: atest WmTests
Change-Id: I34dfd716fc1e16d034405a59d2a0f9beef0ffe36