Mute WatchAckTests.testAckAllActions

Relates to #35506

x-pack/plugin/watcher/src/test/java/org/elasticsearch/xpack/watcher/test/integration/WatchAckTests.java

@@ -122,6 +122,7 @@ public class WatchAckTests extends AbstractWatcherIntegrationTestCase {
         assertThat(throttledCount, greaterThan(0L));
     }
 
+    @AwaitsFix(bugUrl = "https://github.com/elastic/elasticsearch/issues/35506")
     public void testAckAllActions() throws Exception {
         PutWatchResponse putWatchResponse = watcherClient().preparePutWatch()
                 .setId("_id")