Update battery error layout

 - Update font
 - Add importantForAccessibility to make whole layout selectable
 Screenshot: https://screenshot.googleplex.com/9nJxzD47xeaB6ea.png

Bug: 187612897
Test: make RunSettingsRoboTests
Change-Id: I15bbee6780d8e2c0a01995c6dbb91b933abda274
2 files changed