fuelgauge: Hide screen time since last full charge if not valid

Change-Id: I1c826182b75670241ddfbcf810def21ade476eb8
Signed-off-by: minaripenguin <minaripenguin@users.noreply.github.com>

src/com/android/settings/fuelgauge/batteryusage/ScreenOnTimeController.java

@@ -70,7 +70,7 @@ public class ScreenOnTimeController extends BasePreferenceController {
 
     void handleScreenOnTimeUpdated(
             Long screenOnTime, String slotTimestamp, String accessibilitySlotTimestamp) {
-        if (screenOnTime == null) {
+        if (screenOnTime == null || screenOnTime <= 0) {
             mRootPreference.setVisible(false);
             mScreenOnTimeTextPreference.setVisible(false);
             return;