[backport core/1.35] fix: prevent middle mouse button from triggering node resize in vueNodes mode (#7529)

Backport of #7511 to `core/1.35`

Automatically created by backport workflow.

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-7529-backport-core-1-35-fix-prevent-middle-mouse-button-from-triggering-node-resize-in-vueN-2ca6d73d3650816eac41e579c41917b2)
by [Unito](https://www.unito.io)

Co-authored-by: Terry Jia <terryjia88@gmail.com>

src/renderer/extensions/vueNodes/components/LGraphNode.vue

@@ -327,6 +327,7 @@ const { startResize } = useNodeResize((result, element) => {
 })
 
 const handleResizePointerDown = (event: PointerEvent) => {
+  if (event.button !== 0) return
   if (nodeData.flags?.pinned) return
   startResize(event)
 }