[Test] Actually invoke the listener on failure case (#132229) (#132244)

The listener is expected to be called on failure case. This PR does
that.

Resolves: #131979

Author: ywangd

test/external-modules/multi-project/src/test/java/org/elasticsearch/multiproject/action/DeleteProjectActionTests.java

@@ -64,7 +64,7 @@ public void testDeleteNonExisting() throws Exception {
         );
         var nonExistingTask = createTask(randomUniqueProjectId(), listener);
         var tasks = Stream.concat(Stream.of(nonExistingTask), deletedProjects.stream().map(this::createTask)).toList();
-        var result = ClusterStateTaskExecutorUtils.executeIgnoringFailures(state, executor, tasks);
+        var result = ClusterStateTaskExecutorUtils.executeHandlingResults(state, executor, tasks, t -> {}, DeleteProjectTask::onFailure);
         for (ProjectId deletedProject : deletedProjects) {
             assertNull(result.metadata().projects().get(deletedProject));
             assertNull(result.globalRoutingTable().routingTables().get(deletedProject));