Reclassify FGS and BOUND_TOP as "background" in BatteryUsageStats

Bug: 257392992
Bug: 239667114
Test: atest FrameworksCoreTests:BatteryStatsTests
Change-Id: Ice58ea7537847441f41ed97c5f8b2bda2b4b7e4d
(cherry picked from commit 758ad303e54b9a4b37376f65fce2daad74231976)
Merged-In: Ice58ea7537847441f41ed97c5f8b2bda2b4b7e4d
5 files changed