Allow setting of LayoutInflater.Factory in RemoteViews

This allows the inflating code to provide a LayoutInflater.Factory to
the RemoteViews instance and apply performance and memory optimizations
via View replacement. Approach is similar to how androidx libraries
apply AppCompat* views when apps inflate their views.

Bug: 287960719
Test: newly written unit tests
Change-Id: I2c21aee69158ba0a49178ff5384eb3848dbeb99a