Update battery health state intent (2/3)

- Update the extra from overheated to longlife

Bug: 278192441
Test: make SettingsRoboTests

Change-Id: I5a906e64effbd9aaf84446c0670249afefdf7da8

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

@@ -290,8 +290,8 @@ public class BatteryHeaderPreferenceControllerTest {
     }
 
     @Test
-    public void updatePreference_isOverheat_showEmptyText() {
-        mBatteryInfo.isOverheated = true;
+    public void updatePreference_isBatteryDefender_showEmptyText() {
+        mBatteryInfo.isBatteryDefender = true;
 
         mController.updateHeaderPreference(mBatteryInfo);