row_cache: Allow comparing with ring_position views in row_cache::compare
row_cache: Allow comparing with ring_position views in row_cache::compare

scylladb/scylla,duarten/scylla,avikivity/scylla,scylladb/scylla,avikivity/scylla,scylladb/scylla,scylladb/scylla,avikivity/scylla,duarten/scylla,duarten/scylla