Support using best-effort ART_TI_VERSION_1_2 env

This is needed since on user-debug and eng builds we can try to debug
non-debuggable processes. To support his we will try to fall-back to
the best-effort ART_TI_VERSION_1_2 envs.

Bug: 62821960
Test: Manual

Change-Id: I3012279f89f46522cfefe561333e8df333260abe
2 files changed