Mark product apks as unbundled

Similar to Vendor apks, we need to mark product apks as unbundled if it
does not have /product/lib in default search paths. This will enable
native loader's logic to add (/system)/product/lib in search path for
product apk.

Bug: 124705551
Test: m -j & Tested from crosshatch
Change-Id: Ib0ac4bbc1c60ca75288cac81f6b93bb8b36521ef