Adding check to validate assets before appending shared library

Bug: b/344805124
Test: Verified all affected tests passed
Flag: android.content.res.register_resource_paths
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:a5dbbb092fbe6c912c3cce1143d72f3a14aa451b)
Merged-In: Idae846c9f799887635f85bec5e0cb912b5eaa1b1
Change-Id: Idae846c9f799887635f85bec5e0cb912b5eaa1b1