Revert "Removing flag com.android.systemui.keyguard_wm_state_refactor from trunk_staging."

This reverts commit 82471053e1f70eeb64d75b9dcbe15cae134f8fb6.

Reason for revert: Likely culprit for b/371501587  - verifying through ABTD before revert submission. This is part of the standard investigation process, and does not mean your CL will be reverted.

Change-Id: Id73a15999921e9584ed5f0434a2a3762c2994f82