Merge "Add experiment flag for enabling sync sm" into main am: c1647a0efc am: a8f064ec47

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2921405

Change-Id: Ie9e6cf0e1f7549239fcf7a56e9349454784fe934
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>