Allow ssr_detector_app writes to system_app_data_file. am: 65158177dc am: d892b61f83

Original change: https://android-review.googlesource.com/c/device/google/redbull-sepolicy/+/2322657

Change-Id: I04740f062ba9b33c5f11d0cab6e0a7f722509ddb
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>