Merge "Use vendor_file for vendor apex root" into main am: 7c22416a

Original change: https://android-review.googlesource.com/c/platform/build/soong/+/2829510



Change-Id: Iebca619355f6b25aab268d7b8080901c6d0e271c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>