add warning ai status, fix ai availability handling 1

Azaion.Annotator/AnnotatorEventHandler.cs

@@ -483,5 +483,7 @@ public class AnnotatorEventHandler(
             mainWindow.AIDetectBtn.IsEnabled = e.Status == AIAvailabilityEnum.Enabled;
             mainWindow.StatusHelp.Text = e.ToString();
         });
+1        if (e.Status is AIAvailabilityEnum.Enabled or AIAvailabilityEnum.Error)
+            await inferenceService.CheckAIAvailabilityTokenSource.CancelAsync();
     }
 }