Change search order for vendor processes in vndk_lite.

Originally, vndk_lite does not include system/lib/vndk-* directory but
searching the required files in system/lib instead. However, in GSI,
they are using the vndk libs which has symbols than core variants.
To avoid this problem, allow the vendor processes in vndk_lite devices
to search system/lib prior to vndk libs.

Bug: 124063441
Test: Check boot for vndk_lite devices.
Change-Id: I89a72e9d43d6fb05f4b6d87bbd4500f8febfe970