Regression test for scylladb/scylladb#17493.
(cherry picked from commit 72955093eb)
Backport note: removed `timeout` parameter passed to `server_add`,
missing on this branch. (If server adding hangs, it will timeout after
`TOPOLOGY_TIMEOUT` from scylla_cluster.py)
Removed `force_gossip_join_boot` error injection from test, not present
in this branch. Starting nodes with `experimental_features` disabled.
Added missing `handle_state_normal.*finished` message.