Update method isSmartBatteryEnabled()

Check the config value from framework.

Bug: 79698191
Test: RunSettingsRoboTests
Change-Id: I14424e2a96fb3ef3bb7d0f10218266d53e86370d

src/com/android/settings/fuelgauge/PowerUsageFeatureProviderImpl.java

@@ -131,6 +131,7 @@ public class PowerUsageFeatureProviderImpl implements PowerUsageFeatureProvider
 
     @Override
     public boolean isSmartBatterySupported() {
-        return false;
+        return mContext.getResources().getBoolean(
+                com.android.internal.R.bool.config_smart_battery_available);
     }
 }