Mutes failing MovAvgIT tests

 Relates #29456

Author: jimczi

server/src/test/java/org/elasticsearch/search/aggregations/pipeline/moving/avg/MovAvgIT.java

@@ -69,6 +69,7 @@
 import static org.hamcrest.core.IsNull.nullValue;
 
 @ESIntegTestCase.SuiteScopeTestCase
+@LuceneTestCase.AwaitsFix(bugUrl = "https://github.com/elastic/elasticsearch/issues/29456")
 public class MovAvgIT extends ESIntegTestCase {
     private static final String INTERVAL_FIELD = "l_value";
     private static final String VALUE_FIELD = "v_value";