Fix dead lock between AM and BatterySaverStateMachine

Change-Id: If641ad1a0961376de65fdb9d557e7e2e601af389
Fixes: 77308319
Test: Boot, toggle battery saver
Test: atest $ANDROID_BUILD_TOP/frameworks/base/services/tests/servicestests/src/com/android/server/power/batterysaver/BatterySaverStateMachineTest.java
2 files changed