Make entire cancel button area clickable (#1473)

The Cancel button on a survey right now attaches the click handler to the tiny X in the close button.
This PR makes the entire Circle and the X inside it clickable.

src/extensions/surveys/components/QuestionHeader.tsx

@@ -35,7 +35,7 @@ export function Cancel({ onClick }: { onClick: () => void }) {
     const { isPreviewMode } = useContext(SurveyContext)
 
     return (
-        <div className="cancel-btn-wrapper">
+        <div className="cancel-btn-wrapper" onClick={onClick} disabled={isPreviewMode}>
             <button className="form-cancel" onClick={onClick} disabled={isPreviewMode}>
                 {cancelSVG}
             </button>