[LogsDB] [Stack 8.19.22-SNAPSHOT] [network_traffic] Failing test daily: system test: mysql-long in network_traffic.mysql

- Stack version: 8.19.22-SNAPSHOT
- LogsDB: enabled
- Package: network_traffic
- Failing test: system test: mysql-long
- DataStream: mysql
- Owners:
- @elastic/security-service-integrations

Error:
```
could not add data stream config to policy: could not create package policy (req {"name":"network_traffic-mysql-75380","description":"","namespace":"75380","policy_id":"3ae70821-651e-4e51-a19d-f5c8eca032d5","package":{"name":"network_traffic","version":"1.34.3"},"inputs":{"network-packet":{"enabled":true,"vars":{"interface":"/tmp/service_logs/mysql_long.pcap"},"streams":{"network_traffic.amqp":{"enabled":false},"network_traffic.cassandra":{"enabled":false},"network_traffic.dhcpv4":{"enabled":false},"network_traffic.dns":{"enabled":false},"network_traffic.flow":{"enabled":false},"network_traffic.http":{"enabled":false},"network_traffic.icmp":{"enabled":false},"network_traffic.memcached":{"enabled":false},"network_traffic.mongodb":{"enabled":false},"network_traffic.mysql":{"enabled":true},"network_traffic.nfs":{"enabled":false},"network_traffic.pgsql":{"enabled":false},"network_traffic.redis":{"enabled":false},"network_traffic.sip":{"enabled":false},"network_traffic.thrift":{"enabled"
```

First build failed: https://buildkite.com/elastic/integrations/builds/49550

Start by reproducing the network_traffic system test mysql-long with LogsDB enabled, focusing on the mysql data stream and the package-policy creation error. Inspect the failing test setup and its generated policy configuration. Done means the test completes successfully and the mysql data stream configuration is created.

Written by the indexing model from the issue text.