ReplicatedPG: use clone_overlap for stat update on promote/evict

Fixes: #7964
Signed-off-by: Samuel Just <sam.just@inktank.com>
Merge remote-tracking branches 'origin/wip-sam-testing2', 'upstream/wip-7659', 'origin/wip-7904', 'origin/wip-7916', 'origin/wip-7942' and 'origin/wip-7964' into wip-sam-testing