Add flag com.android.window.flags.idempotent_wct_resolution to cp2a.

This change was automatically created by advancing the Gantry workflow at:
https://releasetracker.partner.android.com/changes/7a65c7m000001?build_unique_id=com.android.window.flags.idempotent_wct_resolution-platform
Do not edit this file manually or revert this change - use the Gantry workflow to manage the state of this flag.

Bug: 487350507
Flag: com.android.window.flags.idempotent_wct_resolution
Ignore-AOSP-First: Flag change added internally for future AOSP release
Cherrypick-From: https://googleplex-android-review.googlesource.com/q/commit:63c65724a4034ada68f8f40c059882c6c5858f7d
Merged-In: I4869e96f311c628302b303baddeb4d42dcd654aa
Change-Id: I4869e96f311c628302b303baddeb4d42dcd654aa