Make sure FIRST_LAUNCH is after PACKAGE_ADDED

If an app undergoes restore during install, it is considered 'started'
and the FIRST_LAUNCH broadcast needs to go out.  However, this must not
take place until after the restore operation has fully completed, in
order to avoid publishing the app's existence while it may still be in
an incoherent state.  We now make this broadcast part of POST_INSTALL
in the restore case.

Bundled apps are in the 'started' state regardless, so no FIRST_LAUNCH
broadcast is ever sent for them -- this CL does not change that
existing behavior even in the case of setup-time data restore of
factory-installed packages.

Bug 28173625

Change-Id: Ibcc3758576662dc447b75476173a0d008a9fe4da