Merge "Add experiment flag for enabling sync sm" into main am: c1647a0efc am: 4b272c285f

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

Change-Id: Id7ba51dd5def1e0d2f38923bfc7f6b03034e592b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>