[Battery usage U] [UI] Add a threshold to filter out very small battery usage items in the app list

Bug: 264840285
Fix: 264840285
Test: manual
Change-Id: I36a6c0dc284d09efcf82316db1541d289c37b16f

tests/robotests/src/com/android/settings/fuelgauge/PowerUsageFeatureProviderImplTest.java

@@ -67,6 +67,11 @@ public class PowerUsageFeatureProviderImplTest {
         assertThat(mPowerFeatureProvider.isBatteryUsageEnabled()).isTrue();
     }
 
+    @Test
+    public void testGetBatteryUsageListConsumePowerThreshold_return0() {
+        assertThat(mPowerFeatureProvider.getBatteryUsageListConsumePowerThreshold()).isEqualTo(0.0);
+    }
+
     @Test
     public void testIsTypeSystem_uidRoot_returnTrue() {
         assertThat(mPowerFeatureProvider.isTypeSystem(Process.ROOT_UID, null)).isTrue();