refactor(types): Remove internal __vf field

* fields are merged into the GraphNode / Node interface
* Remove passing props from VueFlow container, use injected state

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

examples/Nesting/GroupNode.vue

@@ -8,8 +8,8 @@ store.hooks.nodeDragStop.on(({ node }) => {
   const nodes = getNodesInside(
     store.getNodes,
     {
-      height: props.__vf.height,
-      width: props.__vf.width,
+      height: props.height,
+      width: props.width,
       x: props.position.x,
       y: props.position.y,
     },