Trigger am and wm presubmit tests for code change under core/java/android/app

The imports setting allows Test Mapping to automatically run presubmit tests
for ActivityManager and WindowManager, when code is changed under
core/java/android/app

Bug: 111302567
Test: local run atest
Change-Id: I5e2c935a56f339c2073426c9b01c7f4b345c16f2