Merge "Add system_ext partition to aconfig_flags.pb paths" into main am: 7b30de07

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/3459748



Change-Id: I31426c45bc4c11d5b3a58696587d6a4e6864d412
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>