Rebase enabled overlays for every PackageParser.generateActivityInfo() call

PackageParser.generateActivityInfo() generates ApplicationInfo as well.
So enabled overlays should be rebased for the ApplicationInfo to keep
the overlay path info correctly.

Test: building succeeded and tested on sailfish device.
Bug: 37179769
Change-Id: I12727fd27c1d4cf37ad63b333792108a82efccd6