Adding flag android.content.pm.app_compat_option_16kb to trunk_staging.

This change was automatically created by advancing the Gantry workflow at:
https://releasetracker.partner.android.com/changes/1nbgoga000001?build_unique_id=android_platform_devoptions_settings
Do not edit this file manually or revert this change - use the Gantry workflow to manage the state of this flag.

Bug: 371049373
Change-Id: If3c36a0cc72a20eaddfbc0fed01886bbfd6ab91e
Flag: android.content.pm.app_compat_option_16kb
Ignore-AOSP-First: AConfig change for future AOSP release