Convert battery framework provided package name to valid one

convert battery framework provided package name to formal one, since
some returned package name will append the process name to avoid
fetching app label and icon not found. for example:

Bug: 188751551
Test: make SettingsgRoboTests
Change-Id: If59167d575154f99eba2c7bd81a1d862652ea47b

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

@@ -417,10 +417,6 @@ public class BatteryEntry {
         }
 
         final String uidString = Integer.toString(uid);
-        if (name == null) {
-            name = uidString;
-        }
-
         if (icon == null) {
             icon = pm.getDefaultActivityIcon();
         }