Fix class-after-object map creation logic Test: module install and enable userfaultfd GC Bug: 263267470 Bug: 160737021 Change-Id: I9606be82a073f0b8315d425652ddaa8b8c2f56f1 (cherry picked from commit 80cd10dc868a0f8b6705fa1c20086b6aabd3f0fe) Merged-In: I9606be82a073f0b8315d425652ddaa8b8c2f56f1