In battery settings, the system item contains many packages. In old
behaviour it will use the first package(which has legal name and icon)
to represent this item. This behaviour is not consistent.
In this cl, we always use package "android" to extract name and icon
if it is system item.
Bug: 65090883
Test: RunSettingsRoboTests
Change-Id: Ibb7f85c06ab1745867f1eaa666cea32c8d3295a6
Set correct defaultPackageName and Label for Apps in BatteryEntry.java
so PowerUsageDetails will show the correct information.
Bug: 24187923
Fixes: 24187923
Test: Open Settings, click on Apps, select any app. Note the name and
icon on the Header. Click the Battery item. The app name and icon should
match that of the previous name, as opposed to showing the package name
and default Android icon.
Change-Id: I7b6c3b404fcd298c6670cceecd29915abd325d1f
