fix: node shape not reactive in vueNodes mode (#7302)

## Summary

add node shape support in vueNodes

fix https://github.com/Comfy-Org/ComfyUI_frontend/issues/7144

## Screenshots (if applicable)


https://github.com/user-attachments/assets/df8a4fa6-5686-435d-a814-4fe3990f7e69

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-7302-fix-node-shape-not-reactive-in-vueNodes-mode-2c56d73d3650811c9ef5e4fe49c94f55)
by [Unito](https://www.unito.io)

---------

Co-authored-by: github-actions <github-actions@github.com>

src/composables/graph/useGraphNodeManager.ts

@@ -69,6 +69,7 @@ export interface VueNodeData {
   }
   color?: string
   bgcolor?: string
+  shape?: number
 }
 
 export interface GraphNodeManager {
@@ -234,7 +235,8 @@ export function useGraphNodeManager(graph: LGraph): GraphNodeManager {
       outputs: node.outputs ? [...node.outputs] : undefined,
       flags: node.flags ? { ...node.flags } : undefined,
       color: node.color || undefined,
-      bgcolor: node.bgcolor || undefined
+      bgcolor: node.bgcolor || undefined,
+      shape: node.shape
     }
   }
 
@@ -571,6 +573,15 @@ export function useGraphNodeManager(graph: LGraph): GraphNodeManager {
                     ? propertyEvent.newValue
                     : undefined
               })
+              break
+            case 'shape':
+              vueNodeData.set(nodeId, {
+                ...currentData,
+                shape:
+                  typeof propertyEvent.newValue === 'number'
+                    ? propertyEvent.newValue
+                    : undefined
+              })
           }
         }
       },