keyguard: fix logic for skip reporting keyguard state

- Fix bug introduced by ag/32707196
- Rename variables according to ag/32707196

Flag: com.android.window.flags.dispatch_first_keyguard_locked_state
Test: manual
Bug: 375029840
Change-Id: I0afd9b07aeb9bf796f51be2c91c3cb5519a784e2