Reset the default usb package less often

This CL makes logic for resetting the default package for handling USB
intents less agressive (added in ag/101452). First, instead of listening
for package changed events, we now listen for package replaced
broadcasts. Second, we don't reset the default package if the app being
added/updated is already the default package.

Bug: 35491880
Test: Manually tested with a work profile
Change-Id: Id1992239b5d8ace87fefeb4acd6ca1031c3c1085