Merge "Change BackgroundDexoptJobStatsLogger#write to report packages count" into main am: 21637691b7

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2778878

Change-Id: Id24746450d1f45793a015da858f00905b004a12d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>