ART: Validate boot image system oat files conditionally

When the load order prefers data, validate the oat files for a
boot image picked up from system.

Follow-up to commit 8682354d448e1c3c355dbcac07b77e9c40e35987.

Bug: 126307038
Test: m test-art-host
Test: Device boots with either order
Change-Id: I7c239a1ddd6e78df136c4aa4c47461392676be87
1 file changed