Merge "Support getSlicingConfig() API for 5G Slicing Configuration" into sc-dev am: d0a2b02567

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/services/Telephony/+/13518327

Change-Id: I5f0f03926403f22efe0844a47031c1e62c1a18b1