High CPU usage when not all repeaters are connected.

[lupettohf]

I've found a bug where if you have a large number of not connected hotsposts the server will still make a listner and try to fetch the data from redis, resulting ina choppy audio experience for all the user due to a high cpu usage when this happens.

Console is getting spammed with
2025/02/05 15:21:25 [internal/dmr/servers/hbrp.(*Server).subscribeRawPackets@server.go:173]: Error getting repeater UNCONNECTED_REPETAER_NUMBER from redis 2025/02/05 15:21:25 [internal/dmr/servers.(*RedisClient).GetRepeater@redis.go:109]: Error getting repeater from redis: redis: nil 2025/02/05 15:21:25 [internal/dmr/servers/hbrp.(*Server).subscribeRawPackets@server.go:173]: Error getting repeater UNCONNECTED_REPETAER_NUMBER from redis 2025/02/05 15:21:25 [internal/dmr/servers.(*RedisClient).GetRepeater@redis.go:109]: Error getting repeater from redis: redis: nil 2025/02/05 15:21:25 [internal/dmr/servers/hbrp.(*Server).subscribeRawPackets@server.go:173]: Error getting repeater UNCONNECTED_REPETAER_NUMBER from redis