Notify PackageHealthObservers of the package versionCode on package failure

PackageHealthObservers may need to verify that the package failure
notification they receive matches the expected package version code.
We now pass the version code along with the package name when notifying
observers.

Test: atest com.android.server.PackageWatchdogTest
Bug: 120598832
Change-Id: I272965d08a07240f3bde358039b52187ff2dd3cf