Bug fix of ModemActivitInfo update am: 917fdc6257 am: 9e5bae4a6a

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/services/Telephony/+/20583574

Change-Id: Ib665fc8327b5ec3e5cdf649a72cb65f4a9b014fb
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>