[automerger skipped] Merge "Support key without default value for carrier config subset retrieval APIs" am: f303bd31e9 am: c7309dbf33 am: ff2c85a480 -s ours

am skip reason: Merged-In I62ee536357f78caa8e95df2e4bf4a34f6bb845e5 with SHA-1 b49e90f219 is already in history

Original change: https://android-review.googlesource.com/c/platform/packages/services/Telephony/+/2479118

Change-Id: I1c9c8b0b409f1e55a1a60ceb0a3a305b9ff70a53
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>