Add product apk support from libnativeloader

Currently libnativeloader appends vendor lib path if apk is from vendor
partition. Similar to this we should add product lib path if apk if from product partition.

Bug: 124705551
Test: m -j && tested from crosshatch with product apps (such as Wallpaper)
Change-Id: Ic85b16e8e4484a35c659c16e067f1e7c7285d05e
Merged-In: Iaa8d0ea61b1b9ab8a1da676a492f75c6a5d71d5d