added bar chart from issue report to demo

Author: nstolpe

demo/ts/components/victory-zoom-container-demo.tsx

@@ -550,6 +550,13 @@ export default class VictoryZoomContainerDemo extends React.Component<
           <VictoryAxis />
           <VictoryAxis dependentAxis />
         </VictoryChart>
+
+        <VictoryChart
+          containerComponent={<VictoryZoomContainer />}
+          style={{ parent: parentStyle }}
+        >
+          <VictoryBar />
+        </VictoryChart>
       </div>
     );
   }