Workaround a notification inflation race condition.

This bug was resulting in notifications which are inflated at the same time the uiMode changes to have the old background color and the new foreground color, making them very hard to read.

Merged-In: Ic13890a4a97628920f5e70d0f0cc24cc00b4829c
Change-Id: Ic13890a4a97628920f5e70d0f0cc24cc00b4829c
Fixes: 227880269
Fixes: 238037994
Fixes: 238892225
Test: manual