update(examples): Use vmodel for custom node

* use v-model for save & restore example

Signed-off-by: Braks <78412429+bcakmakoglu@users.noreply.github.com>

examples/CustomNode/CustomNode.vue

@@ -30,8 +30,8 @@ const onLoad = (flowInstance: FlowInstance) => {
   flowInstance.fitView()
   console.log('flow loaded:', flowInstance)
 }
-const onNodeDragStop = (_: MouseEvent, node: Node) => console.log('drag stop', node)
-const onElementClick = (_: MouseEvent, element: FlowElement) => console.log('click', element)
+const onNodeDragStop = ({ node }) => console.log('drag stop', node)
+const onElementClick = ({ element }) => console.log('click', element)
 const nodeStroke = (n: Node): string => {
   if (n.type === 'input') return '#0041d0'
   if (n.type === 'selectorNode') return bgColor.value
@@ -112,7 +112,7 @@ const onConnect = (params: Connection | Edge) =>
 </script>
 <template>
   <VueFlow
-    :elements="elements"
+    v-model="elements"
     :style="`background: ${bgColor}`"
     :node-types="nodeTypes"
     :connection-mode="ConnectionMode.Loose"