[Reskin] Replace string for chargin on hold

- replace the string for charging on hold in settings main page and
  battery status in battery settings page

Bug: 315748218
Test: Manual Test
Flag: NA
Change-Id: I130d377912e150d593f6480e2bbdf43048b6916e

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

@@ -80,7 +80,8 @@ public class BatteryHeaderPreferenceController extends BasePreferenceController
             return mContext.getString(
                     com.android.settingslib.R.string.battery_info_status_not_charging);
         } else if (BatteryUtils.isBatteryDefenderOn(info)) {
-            return null;
+            return mContext.getString(
+                    com.android.settingslib.R.string.battery_info_status_charging_on_hold);
         } else if (info.remainingLabel == null
                 || info.batteryStatus == BatteryManager.BATTERY_STATUS_NOT_CHARGING) {
             // Present status only if no remaining time or status anomalous