Merge pull request #33050 from heejaechang/taskCenterNull

don't retain fault result in task center if nuget info download failed.

src/VisualStudio/Core/Def/Implementation/SymbolSearch/VisualStudioSymbolSearchService.ProgressService.cs

@@ -72,7 +72,7 @@ private static TaskHandlerOptions GetOptions(string title)
             var options = new TaskHandlerOptions
             {
                 Title = title,
-                ActionsAfterCompletion = CompletionActions.RetainOnFaulted
+                ActionsAfterCompletion = CompletionActions.None
             };
 
             return options;