No agent name in vulnerability indexed data after upgrade

[Dwordcito]

Description

This issue aims to solve a problem when a database upgrade event is triggered. This occurs because, during the event context population, the agent_name field is not populated.

We need to get this information from the global database.

wazuh/src/wazuh_db/wdb_upgrade.c

Line 88 in de414d0

cJSON_AddStringToObject(j_agent_info, "agent_id", wdb->id);

The effect of this is that the name of the agent is not indexed, something key for the user.

Is desired to have other missing fields (agent_ip and agent_version)