Comfy Essentials are not included in Category "Comfy" in search box

### Prerequisites

- [x] I am running the latest version of ComfyUI
- [x] I have custom nodes enabled

### What happened?

Lets say there is this `Load Image` node which is occasionally useful:

it's listed under `Comfy` and `Essentials`

but when I click the Category `Comfy`, it's no longer in the list

### Steps to Reproduce

1. open node search
2. click Comfy category
3. search for Load Image

### Workflow

.

### How is this affecting you?

Feature doesn't work as expected

### ComfyUI Frontend Version

v1.49.6

### Browser

Firefox

### Console Errors

```javascript

```

### Logs

```shell

```

### Additional Context

_No response_

Start at the node search UI and its category-filtering entry point, then reproduce the issue by selecting Comfy and searching for Load Image. Done means nodes categorized as both Comfy and Essentials remain visible when the Comfy category is selected, with the relevant frontend checks passing.

Written by the indexing model from the issue text.