Color/tint the wifi/mobile status bar icons correctly

When in split screen the Wifi and mobile status bar can sometimes end
up in a state where they are tinted dark when they should be light and
vice versa.  This fixes that issue.

Bug: 142921186
Test: Manual - see buganizer
Change-Id: I2ac11db8048de1b2fb225d561ec34fda5000e3fe