fix missing await for task in ApplyToStore (#112)

* fix missing await for task in ApplyToStore

* increase timeout for test to fix CI test fail

src/DurableTask.Netherite/StorageProviders/Faster/TrackedObjectStoreEffectTracker.cs

@@ -23,8 +23,7 @@ namespace DurableTask.Netherite.Faster
 
         public override ValueTask ApplyToStore(TrackedObjectKey key, EffectTracker tracker)
         {
-            this.store.ProcessEffectOnTrackedObject(key, tracker);
-            return default;
+            return this.store.ProcessEffectOnTrackedObject(key, tracker);
         }
 
         public override (long, long) GetPositions()

test/DurableTask.Netherite.Tests/ScenarioTests.cs

@@ -193,7 +193,7 @@ namespace DurableTask.Netherite.Tests
         public async Task LargeFanOutOrchestration()
         {
             var client = await this.host.StartOrchestrationAsync(typeof(Orchestrations.FanOutFanIn), 1000);
-            var status = await client.WaitForCompletionAsync(TimeSpan.FromMinutes(5));
+            var status = await client.WaitForCompletionAsync(TimeSpan.FromMinutes(8));
 
             Assert.Equal(OrchestrationStatus.Completed, status?.OrchestrationStatus);
         }