[Test] Mute SearchResponseTests.testFromXContent()

And also AggregationsTests.testFromXContent() until
https://github.com/elastic/elasticsearch/pull/24964 is merged.

core/src/test/java/org/elasticsearch/action/search/SearchResponseTests.java

@@ -95,6 +95,7 @@ public class SearchResponseTests extends ESTestCase {
         return new SearchResponse(internalSearchResponse, null, totalShards, successfulShards, tookInMillis, shardSearchFailures);
     }
 
+    @AwaitsFix(bugUrl = "https://github.com/elastic/elasticsearch/issues/24891")
     public void testFromXContent() throws IOException {
         // the "_shard/total/failures" section makes if impossible to directly compare xContent, so we omit it here
         SearchResponse response = createTestItem();

core/src/test/java/org/elasticsearch/search/aggregations/AggregationsTests.java

@@ -166,6 +166,7 @@ public class AggregationsTests extends ESTestCase {
         }
     }
 
+    @AwaitsFix(bugUrl = "https://github.com/elastic/elasticsearch/issues/24891")
     public void testFromXContent() throws IOException {
         XContentType xContentType = randomFrom(XContentType.values());
         final ToXContent.Params params = new ToXContent.MapParams(singletonMap(RestSearchAction.TYPED_KEYS_PARAM, "true"));