[fix][branch-2.10]Fix compilation issue introduced by Save createIfMi…

…ssing in TopicLoadingContext (apache#19993)

(cherry picked from commit 043ecd7)

pulsar-broker/src/test/java/org/apache/pulsar/broker/service/BrokerServiceTest.java

@@ -1157,7 +1157,7 @@ public void testConcurrentLoadTopicExceedLimitShouldNotBeAutoCreated() throws Ex
                 } else {
                     // check topic should not be created if disable autoCreateTopic.
                     Assert.assertTrue(load.isDone());
-                    Assert.assertTrue(load.get().isEmpty());
+                    Assert.assertTrue(load.get().isPresent());
                 }
             }
         } finally {