Retrying the remoteview application on the ui thread

Because of various reasons, the async inflation could spuriously
fail, leading to dropped notifications.
We're now retrying them on the UI thread before we fail completely.

Test: runtest -x packages/SystemUI/tests/src/com/android/systemui/statusbar/notification/NotificationInflaterTest.java
Bug: 38190555
Change-Id: I13feaeaad925b72798a22194add16528c9438412