packaging: fix macOS smoke-test Scylla address (scylladb#463)

## Summary

- publish Scylla shard-aware CQL port 19042 in the packaging smoke-test
compose file
- set `--broadcast-rpc-address 127.0.0.1` so the host-side smoke app
uses a host-reachable address on macOS Docker/Colima

## Reason

The macOS package job runs the smoke app on the host while Scylla runs
inside a Docker/Colima VM. With the Rust driver bump, the driver can use
the RPC address advertised by Scylla metadata; without a host-reachable
broadcast RPC address, that can become the compose bridge IP
`172.44.0.2`, which is not routable from the macOS host. Publishing
`19042` also lets shard-aware connections reach the single-node test
instance.

## Testing

- `docker compose -f packaging/smoke-test-app/docker-compose.yml config`

(cherry picked from commit 068bc47)

Author: wprzytula

packaging/smoke-test-app/docker-compose.yml

@@ -11,11 +11,13 @@ services:
     image: scylladb/scylla
     ports:
       - "127.0.0.1:9042:9042"
+      - "127.0.0.1:19042:19042"
     networks:
       public:
         ipv4_address: 172.44.0.2
     command: |
       --rpc-address 172.44.0.2
+      --broadcast-rpc-address 127.0.0.1
       --listen-address 172.44.0.2
       --skip-wait-for-gossip-to-settle 0
       --ring-delay-ms 0