Fixing widgets broken during reconfiguration

Async widget inflation may complete after the updates have been deferred,
leading the widget to a broken state.
Reapply widget if its root content changed while deferred

Bug: 375442765
Bug: 327696338
Test: Verified manually
Flag: EXEMPT bugfix
Change-Id: I78d0f4ce92ee9bd2ee001de3a0e181f2e727218c