Add flag com.android.window.flags.multiple_system_navigation_observer_callbacks to trunk_staging. This change was automatically created by advancing the Gantry workflow at: https://releasetracker.partner.android.com/changes/29tc8pq000001?build_unique_id=com.android.window.flags.multiple_system_navigation_observer_callbacks-platform Do not edit this file manually or revert this change - use the Gantry workflow to manage the state of this flag. Bug: 424146227 Flag: com.android.window.flags.multiple_system_navigation_observer_callbacks Ignore-AOSP-First: AConfig change for future AOSP release Change-Id: I83a5b1129fe5f45b40c5826f78760cc75ca76e0e