Expose missing events on AiMetrics

With https://gitlab.com/gitlab-org/gitlab/-/issues/570987 we introduced a service that counts all AI-related events per namespace. We can use it to expose all missing events that do not need any additional filtering on aiMetrics endpoint.

group(fullPath: "gitlab-org") {
  aiMetrics(startDate: "2025-01-01", endDate: "2025-10-30") {
    chat {
      requestDuoChatEventCount
    }

    troubleshootJob {
      troubleshootJobEventCount
    }

    agenticChat {
      agentPlataformSessionCreateEventCount
      agentPlatformSessionStartedEventCount
      agentPlatformSessionFinishedEventCount
      agentPlatformSessionDroppedEventCount
      agentPlatformSessionStoppedEventCount
    }
  }
}