[7.x] Apply terminateAfter params in index status API (#85432) (#85745)

Author: shahzad31

x-pack/plugins/uptime/server/lib/requests/get_index_status.ts

@@ -15,7 +15,7 @@ export const getIndexStatus: UMElasticsearchQueryFn<{}, StatesIndexStatus> = asy
       _shards: { total },
       count,
     },
-  } = await uptimeEsClient.count({});
+  } = await uptimeEsClient.count({ terminateAfter: 1 });
   return {
     indexExists: total > 0,
     docCount: count,

x-pack/test/api_integration/apis/uptime/rest/fixtures/doc_count.json

@@ -1,4 +1,4 @@
 {
   "indexExists": true,
-  "docCount": 2000
-}
+  "docCount": 1
+}