Nodes 2.0: cancelling context menu causes UI to fail any context option afterwards

### Prerequisites

- [x] I am running the latest version of ComfyUI
- [x] I have searched existing issues to make sure this isn't a duplicate
- [x] I have tested with all custom nodes disabled ([see how](https://docs.comfy.org/troubleshooting/custom-node-issues#step-1%3A-test-with-all-custom-nodes-disabled))

### What happened?

See video attached:

https://github.com/user-attachments/assets/2949717e-eedd-4c29-83e9-133f0992488a

### Steps to Reproduce

1. Right click on a node, then click on an option that has a submenu, like `Shape` or `Color`
2. Instead of selecting an option in the submenu, click outside to close it
3. Notice how the `Node Info` option disappears, since now there's no node selected.
4. However, the node menu is still open. Clicking any option, such as `Rename` will fail.

### How is this affecting you?

Visual/UI issue only

### ComfyUI Frontend Version

1.34.2

### Browser

Chrome/Chromium

### Console Errors

```javascript

```

### Logs

```shell

```

### Additional Context

_No response_

┆Issue is synchronized with this [Notion page](https://www.notion.so/Issue-7039-Nodes-2-0-cancelling-context-menu-causes-UI-to-fail-any-context-option-afterwards-2ba6d73d36508185a66bc948f34d1032) by [Unito](https://www.unito.io)