Fix enable_new_optimize_strategy_for_active_result_states METADATA

METADATA purpose bugfix was removed accidentally in another CL when
resolving merge conflict. It caused Gantry error, so let's add it
back.

Test: presubmit
Bug: 409070736
Flag: EXEMPT bugfix
Change-Id: I9d044b5cb15affa028cb50723f49d6de63d9a19d
1 file changed