clat: just always set mark unconditionally, part 2 am: 8bf5967d1e am: 3c939584ff

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2392252

Change-Id: I68686092e4f021f174801ec17c41e5b62814c963
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>