Update theme after overlay

KeyguardStatusBarView needs to get a theme update after an overlay
change, because the textAppearance that we update the carrier text view
with will overwrite the color that we want to apply if we do things in
the other order

Fixes: 200822200
Test: visual
Change-Id: I528c7df8e440c1870b0d12df878b3027f6b1f3e2