[Observability] filter "hasData" api by processor event (#72810)

* filtering hasdata by processor event

* adding api test

x-pack/plugins/apm/server/lib/observability_overview/has_data.ts

@@ -3,6 +3,8 @@
  * or more contributor license agreements. Licensed under the Elastic License;
  * you may not use this file except in compliance with the Elastic License.
  */
+import { PROCESSOR_EVENT } from '../../../common/elasticsearch_fieldnames';
+import { ProcessorEvent } from '../../../common/processor_event';
 import { Setup } from '../helpers/setup_request';
 
 export async function hasData({ setup }: { setup: Setup }) {
@@ -15,7 +17,24 @@ export async function hasData({ setup }: { setup: Setup }) {
         indices['apm_oss.metricsIndices'],
       ],
       terminateAfter: 1,
-      size: 0,
+      body: {
+        size: 0,
+        query: {
+          bool: {
+            filter: [
+              {
+                terms: {
+                  [PROCESSOR_EVENT]: [
+                    ProcessorEvent.error,
+                    ProcessorEvent.metric,
+                    ProcessorEvent.transaction,
+                  ],
+                },
+              },
+            ],
+          },
+        },
+      },
     };
 
     const response = await client.search(params);