Make RemoteViewsContextWrapper take the user id of the application info.

This is important to ensure sub-contexts know the user id used to create
the current context, or when using a work profile, a new context will be
created each time.

Fix: 197761162
Test: Manually with hand-made app widget
Change-Id: Ifb4a6dad152acbd2b2853ba8bf5cf1e131d55394