Make AOD battery text field support BatteryDefender

 - Add overheat flag into BatteryStatus
 - Update AOD battery indication to support new state when BatteryDefender is enable
 Screenshot: https://screenshot.googleplex.com/BYyUYS7VGtyG3i7.png

Bug: 173080412
Test: atest SystemUITests:com.android.systemui.statusbar.KeyguardIndicationControllerTest
Merged-In: I74f32136ba034d2dea19f71e1e7cecc022cd9fa9
Change-Id: I9aee4e6408d762639818e7aac42a781f12cd69ff