Add coverage to group_sync_status updated correctly on each node

[QU3B1M]

Target version	Related issue	Related PR
4.4.0	#16190	#16202

Description

System tests should be developed to validate the group_sync_status is updated correctly on each cluster's node after a group where the agents are assigned is altered.

Proposed test cases

Group sync status - status updated correctly

Given a wazuh-cluster with 2 workers.
And 10k wazuh-agent connected to each node all assigned to the same 3 groups.
When a group folder is deleted in the "<node>".
Then immediately group_sync_status is in "<first_status>" on all agents.
And after the cluster is sync the group_sync_status is "<final_status>"

Examples:
  | node     | first_status | final_status  |
  |----------|--------------|---------------|
  | master   | synreq       | synced        |
  | worker-1 | synced       | synced        |
  | worker-2 | synced       | synced        |

[davidjiglesias]

It has to be merged into 4.8.0, careful with changelog if applicable.

[pro-akim]

Update

Rebased to 4.8.0

[davidjiglesias]

LGTM!