fix inference

fix small issues

Azaion.Dataset/DatasetExplorer.xaml.cs

@@ -22,7 +22,7 @@ public partial class DatasetExplorer
     private readonly AnnotationConfig _annotationConfig;
     private readonly DirectoriesConfig _directoriesConfig;
 
-    private Dictionary<int, List<Annotation>> _annotationsDict;
+    private Dictionary<int, List<Annotation>> _annotationsDict = new();
     private readonly CancellationTokenSource _cts = new();
 
     public ObservableCollection<DetectionClass> AllDetectionClasses { get; set; } = new();
@@ -191,6 +191,7 @@ public partial class DatasetExplorer
         ClassDistribution.Plot.FigureBackground.Color = new("#888888");
 
         ClassDistribution.Refresh();
+        await Task.CompletedTask;
     }
 
     private async void RefreshThumbnailsBtnClick(object sender, RoutedEventArgs e)
@@ -294,6 +295,7 @@ public partial class DatasetExplorer
             SelectedAnnotations.Add(annThumb);
             SelectedAnnotationDict.Add(annThumb.Annotation.Name, annThumb);
         }
+        await Task.CompletedTask;
     }
 
     private async void ValidateAnnotationsClick(object sender, RoutedEventArgs e)

Azaion.Dataset/DatasetExplorerEventHandler.cs

@@ -100,6 +100,7 @@ public class DatasetExplorerEventHandler(
             datasetExplorer.SelectedAnnotations.Add(annThumb);
             datasetExplorer.SelectedAnnotationDict.Add(annThumb.Annotation.Name, annThumb);
         }
+        await Task.CompletedTask;
     }
 
     public async Task Handle(AnnotationsDeletedEvent notification, CancellationToken cancellationToken)
@@ -114,5 +115,6 @@ public class DatasetExplorerEventHandler(
             datasetExplorer.SelectedAnnotations.Remove(annThumb);
             datasetExplorer.SelectedAnnotationDict.Remove(annThumb.Annotation.Name);
         }
+        await Task.CompletedTask;
     }
 }