Add flag com.android.wm.shell.enable_pip_box_shadows to trunk_staging. This change was automatically created by advancing the Gantry workflow at: https://releasetracker.partner.android.com/changes/6hk49gq000001?build_unique_id=com.android.wm.shell.enable_pip_box_shadows-platform Do not edit this file manually or revert this change - use the Gantry workflow to manage the state of this flag. Bug: 367464660 Flag: com.android.wm.shell.enable_pip_box_shadows Ignore-AOSP-First: AConfig change for future AOSP release Change-Id: I22434dbd1afab0adc386bd7d04f48c9556a665d1