Node Search Box / Input-Output Suggestions not working anymore

### Custom Node Testing

- [x] I have tried disabling custom nodes and the issue persists (see [how to disable custom nodes](https://docs.comfy.org/troubleshooting/custom-node-issues#step-1%3A-test-with-all-custom-nodes-disabled) if you need help)

### Expected Behavior

help me to fix this problem

### Actual Behavior

**Description:**
The node search box and input/output context menu suggestions have stopped working.
When dragging from a node input/output and releasing without connecting, the context menu appears, but no related node suggestions are shown anymore.

This is **not related to any custom nodes or extensions**. I already tested with `--disable-all-custom-nodes`, completely clean environment, and the problem still persists.

**Steps to reproduce:**

1. Launch ComfyUI with `--disable-all-custom-nodes`.
2. Create any node.
3. Drag from an input/output, then release without connecting to another node.
4. Expected: a context menu appears with suggested nodes of compatible types.
5. Actual: no node suggestions are displayed.

**Environment:**

**Additional notes:**

* This feature used to work before, but now the suggestion menu is empty.
* Already tested with no extensions or custom nodes, so the issue seems to be core ComfyUI.

Starting ComfyUI with custom arguments...
Launching Python script...
Checkpoint files will always be loaded safely.
Total VRAM 16376 MB, total RAM 130837 MB
pytorch version: 2.8.0+cu128
xformers version: 0.0.32.post2
Set vram state to: NORMAL_VRAM
Device: cuda:0 NVIDIA GeForce RTX 4080 : cudaMallocAsync
Using sage attention
Python version: 3.12.9 (tags/v3.12.9:fdb8142, Feb 4 2025, 15:27:58) [MSC v.1942 64 bit (AMD64)]
ComfyUI version: 0.3.61
Setting temp directory to: F:\ComfyUI\11\ComfyUI\temp\temp
ComfyUI frontend version: 1.26.13
[Prompt Server] web root: F:\ComfyUI\11\ComfyUI\venv\Lib\site-packages\comfyui_frontend_package\static
Skipping loading of custom nodes
Context impl SQLiteImpl.
Will assume non-transactional DDL.
No target revision found.
Starting server

To see the GUI go to: http://127.0.0.1:8188

echo Launching Python script...
REM Runs the Python script. The %BASE_DIR% and %TMP_DIR% variables already contain the quotes,
REM ensuring that paths with spaces are treated as a single argument.
python main.py --use-sage-attention --base-directory %BASE_DIR% --auto-launch --temp-directory %TMP_DIR% --disable-all-custom-nodes

### Steps to Reproduce

**Steps to reproduce:**

1. Launch ComfyUI with `--disable-all-custom-nodes`.
2. Create any node.
3. Drag from an input/output, then release without connecting to another node.
4. Expected: a context menu appears with suggested nodes of compatible types.
5. Actual: no node suggestions are displayed.

### Debug Logs

```powershell
Starting ComfyUI with custom arguments...
Launching Python script...
Checkpoint files will always be loaded safely.
Total VRAM 16376 MB, total RAM 130837 MB
pytorch version: 2.8.0+cu128
xformers version: 0.0.32.post2
Set vram state to: NORMAL_VRAM
Device: cuda:0 NVIDIA GeForce RTX 4080 : cudaMallocAsync
Using sage attention
Python version: 3.12.9 (tags/v3.12.9:fdb8142, Feb 4 2025, 15:27:58) [MSC v.1942 64 bit (AMD64)]
ComfyUI version: 0.3.61
Setting temp directory to: F:\ComfyUI\11\ComfyUI\temp\temp
ComfyUI frontend version: 1.26.13
[Prompt Server] web root: F:\ComfyUI\11\ComfyUI\venv\Lib\site-packages\comfyui_frontend_package\static
Skipping loading of custom nodes
Context impl SQLiteImpl.
Will assume non-transactional DDL.
No target revision found.
Starting server

To see the GUI go to: http://127.0.0.1:8188
```

### Other

_No response_