Fix uninstalled app issue on battery usage page

Context: for uninstalled app, we cannot get the package UID, name and icon from the package manager, and the app would be shown as package name and default system icon in the page. For those unknown apps, we will put them into 'Uninstalled app' component for a quick fix.

Some lines are changed by auto format, and please ignore it. I will send out a follow up cl to format all battery files. It can improve the productivity if all team members are using the auto-format tool during the development.

Before: https://screenshot.googleplex.com/6zmFVgMxHGYMwqH
After: https://screenshot.googleplex.com/3cZwrhcE8zhDyfN

Test: manual
Bug: 264339271
Change-Id: I61a32675a31eefc8fdb1a408fbcebe9a2d6dcd68