Dismiss any light bulb session in SetUpEditor

src/VisualStudio/IntegrationTest/IntegrationTests/AbstractEditorTest.cs

@@ -69,6 +69,7 @@ protected void SetUpEditor(string markupCode)
             MarkupTestFile.GetPosition(markupCode, out string code, out int caretPosition);
 
             VisualStudio.Editor.DismissCompletionSessions();
+            VisualStudio.Editor.DismissLightBulbSession();
 
             var originalValue = VisualStudio.Workspace.IsPrettyListingOn(LanguageName);