ART: Change test 912 order

Enable events after setting up helpers to avoid internal load
order issues.

Bug: 31684920
Test: m ART_TEST_JIT=true ART_TEST_INTERPRETER=true ART_TEST_GC_STRESS=true test-art-host-run-test-912-classes
Change-Id: Ib744309d778591a337fe2434ad67926e8d12e997
2 files changed