Fix BatterySaverPolicyTest and add more accessibility test

Change-Id: I90fd6cb4980d540f77c749f987678de2852d2a47
Bug: 78174280
Fixes: 79123174
Test: atest ${ANDROID_BUILD_TOP}/frameworks/base/services/tests/servicestests/src/com/android/server/power/BatterySaverPolicyTest.java
Test: Manual test -- enable battery saver, enable accessibility, make sure
vibration still works.
2 files changed