Add flag com.android.libcore.appinfo to trunk_staging.

This change was automatically created by advancing the Gantry workflow at:
https://releasetracker.partner.android.com/changes/1ptnbt2000001?build_unique_id=android_platform_devtools
Do not edit this file manually or revert this change - use the Gantry workflow to manage the state of this flag.

Bug: 333161320
Flag: com.android.libcore.appinfo
Ignore-AOSP-First: AConfig change for future AOSP release
Change-Id: If1caf1ab8d1b34b0ca2fc820912627f4db141c8e