Fix leak in TimeSeriesRateAggregatorTests (#115345)

Fixes #115334

Author: kkrik-es

muted-tests.yml

@@ -317,8 +317,6 @@ tests:
 - class: org.elasticsearch.xpack.test.rest.XPackRestIT
   method: test {p0=esql/60_usage/Basic ESQL usage output (telemetry)}
   issue: https://github.com/elastic/elasticsearch/issues/115231
-- class: org.elasticsearch.xpack.analytics.rate.TimeSeriesRateAggregatorTests
-  issue: https://github.com/elastic/elasticsearch/issues/115334
 - class: org.elasticsearch.xpack.watcher.trigger.schedule.engine.TickerScheduleEngineTests
   method: testAddWithNoLastCheckedTimeButHasActivationTimeExecutesBeforeInitialInterval
   issue: https://github.com/elastic/elasticsearch/issues/115339

x-pack/plugin/analytics/src/test/java/org/elasticsearch/xpack/analytics/rate/TimeSeriesRateAggregatorTests.java

@@ -156,8 +156,12 @@ public void testNestedWithinAutoDateHistogram() throws IOException {
         AggTestConfig aggTestConfig = new AggTestConfig(tsBuilder, timeStampField(), counterField("counter_field"))
             .withSplitLeavesIntoSeperateAggregators(false);
         expectThrows(IllegalArgumentException.class, () -> testCase(iw -> {
-            iw.addDocuments(docs(2000, "1", 15, 37, 60, /*reset*/ 14));
-            iw.addDocuments(docs(2000, "2", 74, 150, /*reset*/ 50, 90, /*reset*/ 40));
+            for (Document document : docs(2000, "1", 15, 37, 60, /*reset*/ 14)) {
+                iw.addDocument(document);
+            }
+            for (Document document : docs(2000, "2", 74, 150, /*reset*/ 50, 90, /*reset*/ 40)) {
+                iw.addDocument(document);
+            }
         }, verifier, aggTestConfig));
     }