Fix for some downloaded apps showing up on all users

Bug: 7226656

In the case of packages with sharedUserId, the packages were inserted
into mPackages a little later. We were reading the package restrictions
before this happened and so the apps were being removed from the restricted
list, effectively setting installed=true.

Moved the block that reads the restrictions to after the processing of
mPendingPackages.

Also, don't setInstalled for all users in the pending packages processing.

Change-Id: I382787e45fecdb871d80ffb4d854782d8e32e4a7